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About product and suppliers:
        Alibaba.com offers 9,570 door opening size products. About 30% of these are doors, 1% are openers, and 1% are automatic door operators. 

A wide variety of door opening size options are available to you, such as automatic door operators, entry doors. You can also choose from swing, sliding, and folding. As well as from interior, exterior, and commercial. And whether door opening size is solid wood, composite, or steel. 

There are 9,570 door opening size suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of door opening size respectively. 

Door opening size products are most popular in North America, Domestic Market, and Mid East. 

You can ensure product safety by selecting from certified suppliers, including 2,401 with ISO9001, 700 with Other, and 345 with ISO14001 certification.