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About product and suppliers:
        Alibaba.com offers 1,318 4 sided brackets products. About 27% of these are brackets, 1% are sheet metal fabrication. 

A wide variety of 4 sided brackets options are available to you, such as metal, stainless steel, and wood. You can also choose from wall bracket, industrial, and furniture. As well as from triangle bracket, single-side bracket. And whether 4 sided brackets is nonstandard, or standard. 

There are 1,318 4 sided brackets suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of 4 sided brackets respectively. 

 sided brackets products are most popular in North America, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 218 with ISO9001, 145 with Other, and 48 with ISO14001 certification.