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About product and suppliers:
        Alibaba.com offers 3,777 main door frame products. About 75% of these are doors, 2% are door & window frames, and 1% are aluminum profiles. 

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

There are 3,777 main door frame suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of main door frame respectively. 

Main door frame products are most popular in North America, Mid East, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 979 with ISO9001, 708 with Other, and 210 with ISO14001 certification.