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About product and suppliers:
        Alibaba.com offers 37,251 back door products. About 1% of these are doors. 

A wide variety of back door options are available to you, such as aluminum alloy, solid wood, and plastic. You can also choose from entry doors, sliding doors, and security doors. As well as from exterior, interior, and commercial. And whether back door is swing, sliding, or folding. 

There are 37,245 back door suppliers, mainly located in Asia. The top supplying countries are China (Mainland), India, and Pakistan, which supply 95%, 1%, and 1% of back door respectively. 

Back door products are most popular in North America, Domestic Market, and Western Europe. 

You can ensure product safety by selecting from certified suppliers, including 9,842 with Other, 9,842 with ISO9001, and 2,515 with ISO14001 certification.