About product and suppliers:
            328 vent dampers products are offered for sale by suppliers on Alibaba.com, of which hvac systems & parts accounts for 19%, valves accounts for 7%, and other exterior accessories accounts for 1%. 

A wide variety of vent dampers options are available to you, 

There are 98 suppliers who sells vent dampers on Alibaba.com, mainly located in Asia. The top countries of suppliers are China, Taiwan, China, from which the percentage of vent dampers supply is 98%, 1% respectively.