Rectangular Floor Drain Explained: Structure, Properties, and How to Implement in Industry

Types of Rectangular Floor Drains

Rectangular floor drains are essential components in modern plumbing and drainage systems, offering efficient water management across residential, commercial, and industrial environments. Their linear design provides superior water capture compared to traditional round drains, especially in areas with high water flow or where aesthetics matter. Below is a comprehensive overview of the most common types of rectangular floor drains, their applications, benefits, and limitations.

Stub-Out Drains

Designed for integration into concrete flooring during new construction, stub-out drains feature pre-extended fittings that can be directly soldered or glued into the drainage system.

Advantages

• Seamless integration with plumbing during construction
• Permanent and leak-resistant installation
• Reduces need for future modifications
• Cost-effective for new builds

Limitations

• Not suitable for retrofitting
• Limited flexibility after installation
• Requires precise placement during build phase

Best for: New construction projects, concrete slab installations, basements, and industrial flooring

Channel Drains

Featuring a continuous grate over a linear channel, these drains are among the most versatile and widely used rectangular drain types. They efficiently collect water along an extended surface area.

Advantages

• High water evacuation capacity
• Available in various lengths and flow rates
• Improves safety by preventing slip hazards
• Suitable for both indoor and outdoor use

Limitations

• Grates may require regular cleaning
• Bulkier appearance in some designs
• Higher initial installation cost than point drains

Best for: Showers, patios, pool decks, commercial kitchens, and high-traffic wet areas

Trench Drains

Robust, large-capacity drainage systems with a rectangular cross-section and sloped interior to facilitate rapid water flow. Trench drains are engineered for heavy-duty environments.

Advantages

• Handles very high water volumes
• Durable construction (often polymer concrete or stainless steel)
• Ideal for flood-prone or wash-down areas
• Customizable length and grate options

Limitations

• Takes up more floor space
• More complex installation process
• Potential trip hazard if not properly installed

Best for: Factories, car washes, loading docks, outdoor plazas, and industrial facilities

Slot Drains

Compact, minimalist drains with a narrow opening (typically 1–2 inches wide), offering a sleek, modern look with efficient drainage for low to moderate water flow.

Advantages

• Low-profile, aesthetically pleasing design
• Easy to integrate into tight spaces
• Minimal debris accumulation
• Popular in modern architectural designs

Limitations

• Lower flow capacity than trench or channel drains
• May require more frequent maintenance in debris-heavy areas
• Limited load-bearing options in some models

Best for: Residential showers, laundry rooms, luxury bathrooms, and design-focused interiors

Wall-Mounted Drains

Installed vertically along walls or at the base of walls, these rectangular drains collect water before it spreads across the floor, making them ideal for moisture-prone vertical surfaces.

Advantages

• Prevents water pooling at wall bases
• Protects walls and flooring from moisture damage
• Space-saving design
• Excellent for areas with limited floor space

Limitations

• Not suitable for large floor areas
• Limited water intake compared to floor drains
• Requires precise wall integration during construction

Best for: Basements, garages, swimming pool enclosures, and industrial wash walls

Grease Interceptor Drains

Specialized rectangular drains equipped with built-in grease traps that separate fats, oils, and grease (FOG) from wastewater before it enters the sewer system.

Advantages

• Prevents sewer clogs and backups
• Complies with health and environmental regulations
• Reduces maintenance and repair costs
• Essential for commercial food service operations

Limitations

• Requires regular cleaning and maintenance
• Higher upfront cost
• Bulkier design due to internal components

Best for: Commercial kitchens, restaurants, food processing plants, and cafeterias

Type	Flow Capacity	Installation Complexity	Best Use Case	Maintenance Level
Stub-Out Drains	Medium	High (during construction)	New concrete installations	Low
Channel Drains	High	Medium	Wet areas with moderate to high flow	Medium
Trench Drains	Very High	High	Industrial and outdoor flood zones	Medium-High
Slot Drains	Low-Medium	Low-Medium	Residential and aesthetic applications	Low
Wall-Mounted Drains	Medium	Medium	Moisture control along walls	Medium
Grease Interceptor Drains	Medium	High	Commercial kitchens and food prep areas	High

Expert Tip: When selecting a rectangular floor drain, consider both current water load and future usage. For example, upgrading to a channel or trench drain in a home renovation may add long-term value and prevent water damage, even if initial flow needs are low.

Commercial Value and Uses of Rectangular Floor Drains

Rectangular floor drains are increasingly recognized for their high commercial value across a wide range of industries. Their unique design combines functional efficiency with structural durability, making them ideal for managing water in both indoor and outdoor environments. Due to their versatility, reliability, and cost-effectiveness, these drains have become essential components in commercial kitchens, industrial facilities, parking garages, swimming pool decks, and more.

Understanding the full scope of their commercial benefits and diverse applications enables facility managers, architects, and engineers to make informed decisions when designing or upgrading drainage systems. Below is a comprehensive breakdown of the key commercial values and real-world uses of rectangular floor drains.

Key Commercial Benefits of Rectangular Floor Drains

Efficient Water Management

One of the primary advantages of rectangular floor drains is their superior water evacuation capability. Their elongated shape provides a larger surface area for water intake compared to traditional round or square drains, allowing for rapid removal of large volumes of water.

This efficiency significantly reduces the risk of water pooling, which can lead to structural damage, mold growth, and unsafe conditions. In environments such as food processing plants or car wash bays, where constant water exposure is inevitable, rectangular drains help maintain dry, hygienic surfaces and protect infrastructure from long-term water damage.

By preventing water accumulation, these drains also reduce maintenance costs associated with floor repairs, waterproofing, and equipment corrosion—making them a smart investment for any water-prone facility.

Versatile Applications

Rectangular floor drains are engineered for adaptability, serving a broad spectrum of commercial and industrial settings. Their linear design allows seamless integration into various architectural layouts, including sloped floors, narrow corridors, and high-traffic zones.

Common applications include:

• Commercial Kitchens: Handle grease, wastewater, and frequent cleaning runoff while meeting health code requirements.
• Industrial Facilities: Manage coolant spills, chemical runoff, and process water in manufacturing plants.
• Parking Garages: Efficiently channel rainwater and melting snow from vehicle entrances and ramps.
• Swimming Pool Decks: Provide rapid drainage around pools to prevent slip hazards and comply with safety regulations.
• Hospitals & Laboratories: Support sterile environments by ensuring quick removal of cleaning fluids and spills.

Their ability to accommodate varying flow rates and withstand heavy loads makes them suitable for both light-duty and heavy-duty environments.

Enhanced Safety

Slip-and-fall accidents are a leading cause of workplace injuries, especially in wet environments. Rectangular floor drains play a crucial role in mitigating this risk by quickly removing standing water from walking surfaces.

Because of their continuous slot design, they capture water along an extended line rather than at a single point, minimizing puddles and improving traction. This is particularly beneficial in high-traffic areas such as factory floors, warehouse aisles, and public restrooms.

In addition, many models come with anti-slip grating options and comply with ADA (Americans with Disabilities Act) standards, further enhancing accessibility and safety for all users.

Cost-Effective Long-Term Solution

While the initial installation cost of rectangular floor drains may be slightly higher than standard point drains, their long-term economic benefits far outweigh the upfront investment.

They reduce the likelihood of water-related damage, lower insurance premiums due to improved safety compliance, and minimize downtime caused by flooding or maintenance issues. Additionally, their robust construction—often using stainless steel, cast iron, or durable polymers—ensures a service life of decades with proper care.

Businesses that rely on consistent operational uptime, such as breweries, dairies, and logistics centers, find that the reliability of rectangular drains directly contributes to reduced operating expenses and increased productivity.

Easy Maintenance and Cleaning

Maintenance simplicity is a major selling point for rectangular floor drains. Most models feature removable grates or linear covers that allow easy access to the channel for inspection, cleaning, and debris removal.

This accessibility eliminates the need for specialized tools or extensive labor during routine upkeep. Regular cleaning prevents clogs caused by grease buildup, sediment, or organic matter—common issues in food service and processing environments.

Furthermore, the smooth interior channels of modern rectangular drains resist bacterial growth and are compatible with high-pressure washing and chemical sanitation, supporting strict hygiene protocols in sensitive industries.

With minimal maintenance requirements, these drains offer a sustainable, low-effort solution that maintains peak performance over time.

Benefit	Industry Impact	Long-Term Advantage
High Drainage Capacity	Reduces flooding risks in car washes, pools, and processing plants	Prevents costly water damage and business interruptions
Design Flexibility	Integrates into modern architectural designs and retrofit projects	Supports aesthetic and functional upgrades without compromising performance
Durability	Withstands heavy foot and vehicle traffic in garages and factories	Lowers replacement frequency and lifecycle costs
Hygienic Design	Meets health and safety standards in food, medical, and pharmaceutical facilities	Helps pass inspections and avoid regulatory fines

Conclusion: A Smart Investment for Modern Facilities

Rectangular floor drains are more than just functional plumbing fixtures—they are strategic assets that enhance safety, efficiency, and sustainability in commercial and industrial operations. Their ability to manage large volumes of water, adapt to diverse environments, and reduce long-term maintenance burdens makes them indispensable in today’s demanding facility designs.

Important: When selecting rectangular floor drains, consider factors such as load rating, material compatibility, slope requirements, and local building codes. Consulting with a drainage specialist ensures optimal placement and system performance. Proper installation and routine maintenance are key to maximizing the commercial value and lifespan of these systems.

Designs and Materials Used to Make Rectangular Floor Drains

Rectangular floor drains are essential components in both residential and commercial plumbing systems, designed to efficiently remove surface water while maintaining safety, hygiene, and aesthetic appeal. The choice of material and design significantly impacts performance, longevity, and suitability for specific environments. Below is a comprehensive overview of the most common materials and designs used in rectangular floor drains, helping professionals and property owners make informed decisions based on application needs.

Stainless Steel

Stainless steel is one of the most popular materials for rectangular floor drains due to its exceptional strength, corrosion resistance, and sleek appearance. It withstands exposure to water, chemicals, and high-traffic conditions without rusting or degrading.

• Ideal for commercial kitchens, hospitals, laboratories, and food processing facilities where hygiene and durability are critical
• Resists bacterial growth and is easy to clean, meeting strict sanitation standards
• Available in various grades (e.g., 304 and 316), with 316 offering superior resistance to chlorides and saltwater environments
• Premium finish options (brushed, polished) enhance visual appeal in modern architectural designs

Best for: High-moisture, high-sanitation, and corrosive environments

Plastic (PVC/ABS)

Plastic floor drains, typically made from PVC or ABS, offer a lightweight, affordable, and corrosion-resistant solution. They are especially suitable for low-traffic and residential applications.

• Highly resistant to rust and chemical degradation, making them ideal for damp areas like laundry rooms, basements, and balconies
• Easy to cut, fit, and install—perfect for DIY installations or retrofitting existing flooring
• Quieter than metal drains, reducing water flow noise
• Less durable under heavy loads or extreme temperatures; not recommended for industrial use

Best for: Residential, light-duty, and budget-friendly installations

Cast Iron

Cast iron drains are known for their unmatched durability and load-bearing capacity. They are commonly used in commercial and industrial settings where strength and longevity are paramount.

• Extremely robust and capable of withstanding heavy foot and vehicle traffic
• Natural sound-dampening properties reduce noise from water flow
• Often equipped with a water-sealed trap that prevents sewer gases and odors from entering the building—especially important in commercial kitchens
• Heavy and more difficult to install, requiring professional handling
• May require protective coating to prevent rust if exposed to moisture over time

Best for: Heavy-duty commercial and industrial applications, including restaurants and factories

Galvanized Steel

Galvanized steel is carbon steel coated with a protective layer of zinc to resist rust and corrosion. It offers a cost-effective balance between strength and durability.

• Suitable for outdoor installations like patios, garages, and loading docks where moisture exposure is frequent
• More affordable than stainless steel but less resistant to long-term corrosion
• May degrade over time in highly acidic or saline environments
• Commonly used in industrial and agricultural settings where budget constraints exist

Best for: Outdoor and industrial areas needing economical yet sturdy drainage

Common Rectangular Floor Drain Designs

The design of a floor drain influences not only its functionality but also its integration into the architectural space. Modern designs prioritize efficiency, ease of maintenance, and visual appeal.

Removable Grate

The traditional and most widely used design, featuring a removable top grate that allows access to the drain body for cleaning and inspection.

• Available in various materials (stainless steel, plastic, cast iron) and finishes to match décor
• Easy to maintain—simply lift the grate to remove debris
• Available in multiple slot patterns and load ratings (light, medium, heavy duty)
• Ideal for both residential and commercial spaces requiring routine maintenance

Key benefit: Versatility and accessibility

Slot Drain (Linear Drain)

A minimalist, linear design with a narrow slot opening instead of a traditional grate. Offers a sleek, modern appearance with high drainage efficiency.

• Perfect for contemporary bathrooms, showers, pool decks, and commercial wet rooms
• Provides a seamless look with flush installation into tile or concrete flooring
• Reduces tripping hazards due to low-profile design
• Requires regular cleaning to prevent hair and debris from clogging the narrow opening

Design advantage: Aesthetic integration and space-saving profile

Trench Drain

A large, deep rectangular drain designed to handle high volumes of water in industrial and commercial environments.

• Commonly used in car washes, factories, loading docks, and outdoor plazas
• Constructed with reinforced concrete or heavy-duty metal frames to support vehicle traffic
• Can be customized in length and width to suit specific site requirements
• Often includes a sloped channel to enhance water flow and prevent pooling

Performance highlight: High-capacity drainage for flood-prone or high-traffic areas

Channel Drain

A shallow, linear system that collects water along a defined path, such as driveways, sidewalks, or around building perimeters.

• Typically made from plastic, concrete, or galvanized steel
• Easy to install with modular sections that can be connected as needed
• Prevents water accumulation and erosion in outdoor spaces
• Often used in conjunction with gutter systems or landscape grading

Ideal for: Surface water management in exterior applications

Grease Floor Drain

Specially designed for commercial kitchens, this drain includes an integrated grease interceptor or trap that separates fats, oils, and greases (FOG) from wastewater.

• Prevents clogs and blockages in sewer lines caused by solidified grease
• Helps comply with local environmental and health regulations
• Requires regular maintenance to remove accumulated grease and ensure proper function
• Typically constructed from stainless steel or cast iron for durability and sanitation

Critical for: Restaurants, cafeterias, and food processing facilities

Professional Recommendation: When selecting a rectangular floor drain, always consider the environment, expected water volume, load requirements, and maintenance accessibility. For high-hygiene or corrosive environments, stainless steel with a slot or removable grate design is often the best choice. In heavy-duty industrial settings, cast iron trench drains provide unmatched durability. For residential or light commercial use, plastic or galvanized steel with a channel or grate design offers a cost-effective and functional solution.

Material	Best Use Case	Lifespan	Maintenance Level
Stainless Steel	Commercial kitchens, hospitals, wet rooms	15–25+ years	Low (easy to clean, corrosion-resistant)
Plastic (PVC/ABS)	Residential bathrooms, balconies, basements	10–15 years	Low (lightweight, no rust)
Cast Iron	Industrial kitchens, factories, high-traffic areas	20–30+ years	Moderate (heavy, may require sealing)
Galvanized Steel	Garages, outdoor patios, agricultural buildings	8–12 years	Moderate (can rust over time)

Additional Considerations

• Load Rating: Choose drains with appropriate load classifications (e.g., light, medium, heavy, or extra-heavy duty) based on foot or vehicle traffic
• Trap Mechanism: Ensure the drain includes a water seal or mechanical trap to prevent sewer gas infiltration
• Slope and Flow: Proper installation with correct slope ensures efficient water evacuation and prevents standing water
• Code Compliance: Verify that the drain meets local plumbing codes and ADA requirements, especially in public facilities
• Aesthetic Integration: Consider finish and profile to match tile, stone, or flooring materials for a seamless look

How To Choose Rectangular Floor Drains: A Comprehensive Buyer’s Guide

Selecting the right rectangular floor drain is essential for efficient water management, long-term durability, and compliance with building standards. Whether you're designing a residential bathroom, a commercial kitchen, or an industrial facility, the performance of your drainage system depends on thoughtful selection based on usage, environment, and structural demands. While personal preferences may vary, focusing on key technical and functional factors ensures a universally effective and reliable solution.

Important Note: Choosing the wrong floor drain can lead to flooding, structural damage, or safety hazards. Always match the drain’s specifications to the actual conditions of the installation site, including expected water volume, load exposure, and chemical environment.

Key Factors to Consider When Choosing Rectangular Floor Drains

• Water Volume and Flow Rate

  The amount of water the drain must handle is one of the most critical selection criteria. High-flow environments such as car wash bays, commercial kitchens, industrial processing areas, or outdoor plazas require drains with high hydraulic capacity. In these cases, trench drains or channel drains are ideal due to their extended length and large surface area, allowing rapid water evacuation.

  For areas with low to moderate water exposure—such as residential showers, laundry rooms, or utility spaces—slot drains or compact rectangular units are sufficient. These provide a sleek appearance while maintaining adequate drainage performance without over-engineering the system.

• Material and Durability

  The material of the drain significantly affects its lifespan, resistance to corrosion, and suitability for specific environments. Consider the following options based on application:

  • Stainless Steel: Ideal for chemically aggressive or hygienic environments like food processing plants, hospitals, and laboratories. Resists rust, corrosion, and bacterial growth.
  • Cast Iron: Offers exceptional strength and vibration resistance, making it perfect for heavy industrial or commercial applications. Often used in parking garages and manufacturing facilities.
  • Galvanized Steel: Provides good corrosion resistance and is cost-effective for outdoor or semi-exposed areas such as patios, loading docks, and exterior walkways.
  • Plastic (PVC/PP): Lightweight, affordable, and resistant to many chemicals. Suitable for residential or light commercial use where heavy loads are not a concern.
• Load Capacity and Structural Strength

  In commercial and industrial settings, floor drains must withstand constant foot traffic, rolling equipment, or even vehicle traffic. The load rating—measured in accordance with international standards like EN 1433—determines where a drain can be safely installed.

  For example:

  • Class A15 (Light Duty): Pedestrian areas, bathrooms, residential spaces.
  • Class C250 (Medium Duty): Commercial kitchens, garages, and light vehicle zones.
  • Class D400 (Heavy Duty): Industrial plants, airport tarmacs, and truck loading bays.

  Trench and cast iron drains typically meet higher load classes, making them suitable for demanding environments. Always verify the load rating before installation to prevent structural failure.

• Ease of Maintenance and Cleanability

  Regular maintenance is crucial to prevent clogs and ensure long-term performance. Choose drains with removable grates or covers that allow quick access for cleaning. In high-debris environments like workshops or commercial kitchens, opt for models with built-in traps or grease interceptors.

  Slot drains are particularly easy to maintain due to their linear design and minimal crevices. Stainless steel models further enhance cleanability and are compatible with high-pressure washing and chemical sanitation—important for food service and healthcare applications.

  Consider models with anti-odor seals or integrated strainers to reduce maintenance frequency and improve hygiene.

• Installation Requirements and Compatibility

  The complexity of installation varies significantly between drain types. Some systems require concrete cutting, rebar reinforcement, and precise slope alignment, while others are designed for simple retrofitting.

  For example:

  • Channel and Slot Drains: Can be installed in both new concrete pours and existing tiled floors with proper cutting. Often used in renovations due to their adaptability.
  • Prefabricated Systems: Offer modular designs that simplify installation and reduce labor time, especially in large-scale projects.

  Ensure your subfloor can support the chosen drain and that proper slope (typically 1–2%) is maintained toward the drain for optimal water flow. Professional installation is recommended for heavy-duty or complex systems.

Factor	Best For	Avoid In	Recommended Materials
High Water Volume	Car washes, showers, outdoor areas	Narrow or undersized drains	Stainless steel, galvanized steel
Heavy Load Areas	Garages, factories, driveways	Plastic or lightweight grates	Cast iron, reinforced stainless steel
Chemical Exposure	Labs, food processing, cleaning zones	Galvanized or carbon steel	Stainless steel (304/316)
Easy Maintenance Needs	Kitchens, bathrooms, utility rooms	Fixed or welded grates	Stainless steel with removable grates
DIY or Retrofit Projects	Renovations, small bathrooms	Structurally complex systems	Plastic, modular slot drains

Expert Tip: When planning your layout, consider placing rectangular drains along walls or in linear paths to maximize water capture efficiency. Linear trench systems outperform single-point round drains in large or wet areas by providing continuous drainage along the entire length.

Additional Selection Tips

• Check local building codes and plumbing regulations before purchasing.
• Choose a grate design that balances aesthetics with safety—avoid sharp edges or wide openings in high-traffic areas.
• For indoor applications, consider noise-dampening features to reduce water flow sounds.
• Use slope calculators or consult a plumber to ensure proper floor grading toward the drain.
• Invest in high-quality seals and gaskets to prevent leaks and water damage beneath the floor.

Choosing the right rectangular floor drain isn’t just about function—it’s about ensuring safety, longevity, and compliance. By evaluating water volume, material durability, load capacity, maintenance needs, and installation complexity, you can select a solution that performs reliably for years. When in doubt, consult a plumbing or drainage specialist to match your specific environment with the optimal product.

Frequently Asked Questions About Rectangular Floor Drains

Q1: How effective are rectangular floor drains in reducing standing water?

Rectangular floor drains are highly effective at minimizing standing water, especially in areas where rapid water evacuation is essential. Their elongated design provides a significantly larger surface area compared to traditional round drains, allowing for faster and more efficient water collection.

• Superior Flow Capacity: The extended slot captures water across a broader zone, making them ideal for showers, pool decks, and commercial kitchens.
• Low-Profile Design: These drains sit flush with the floor surface, reducing trip hazards and blending seamlessly into modern architectural designs.
• Indoor Efficiency: Particularly effective in low-flow environments such as bathrooms, basements, and laundry rooms, where consistent drainage prevents moisture buildup and mold growth.

By directing water to centralized drainage systems quickly, rectangular floor drains enhance both safety and hygiene in wet areas.

Q2: What key factors should be considered when installing rectangular drains in outdoor applications?

Installing rectangular floor drains outdoors requires careful planning to ensure long-term performance and durability under variable weather and load conditions. Key considerations include:

• Load Rating: Choose a drain with an appropriate load class (e.g., light-duty for patios, heavy-duty for driveways or commercial zones) to withstand foot traffic, vehicles, and environmental stress.
• Material Selection: Stainless steel or heavy-duty polymer grates resist corrosion from rain, snow, and de-icing salts, ensuring longevity in exposed environments.
• Proper Grading and Slope: The surrounding area must be sloped correctly (typically 1–2%) toward the drain to prevent ponding and ensure gravity-fed flow.
• Debris Management: Outdoor installations benefit from leaf guards or removable grates for easy cleaning, especially in areas prone to leaves, dirt, or sand accumulation.
• Integration with Drainage Systems: Channel drains or trench systems can be linked to downspouts, storm sewers, or dry wells to efficiently redirect surface runoff.

When properly installed, rectangular outdoor drains significantly reduce water pooling, protect landscaping, and prevent erosion around foundations.

Q3: Do rectangular floor drains have specific installation and maintenance requirements?

While most rectangular floor drains are designed for straightforward installation, proper setup is crucial to maximize efficiency and prevent future issues. Maintenance is generally minimal but essential for optimal performance.

• Installation Process: The drain is embedded into concrete, tile, or paver surfaces during construction or renovation. It must be level and aligned with the surrounding slope to ensure proper water flow.
• Sealing and Waterproofing: High-quality sealants should be used around the drain body to prevent leaks, especially in waterproofing membranes beneath tiled floors.
• Clog Prevention: Hair, soap scum, and debris can accumulate over time. Regular cleaning with a brush or plunger helps maintain flow rates.
• Inspection Schedule: Inspect drains every 3–6 months, especially in high-use areas, to check for blockages, corrosion, or structural damage.
• Removable Grates: Most models feature easy-to-remove grates for quick access to the trap or channel, simplifying cleaning and inspection.

Following manufacturer guidelines and using compatible materials during installation ensures reliable, long-term drainage performance.

Q4: What are the primary functions of a grease trap drain?

Grease trap drains play a critical role in commercial and industrial kitchen operations by intercepting fats, oils, and grease (FOG) before they enter the wastewater system. Their main functions include:

• Grease Separation: As wastewater flows through the trap, cooler temperatures cause grease to solidify and rise to the surface, where it is captured and retained.
• Sewer Line Protection: Prevents FOG buildup in pipes, which can lead to severe clogs, backups, and costly repairs in municipal sewer systems.
• Environmental Compliance: Many local regulations require commercial kitchens to install and maintain grease traps to reduce pollution and protect water treatment facilities.
• Odor and Pest Control: By containing decomposing organic matter, grease traps help minimize foul smells and discourage rodent or insect infestations.
• Easy Maintenance Access: Designed with removable lids for routine pumping and cleaning—typically required every 1–3 months depending on usage volume.

Rectangular grease trap drains are often used in commercial settings due to their larger capacity and ability to integrate seamlessly into kitchen flooring, combining functionality with space efficiency.