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About product and suppliers:
        Alibaba.com offers 2,761 electrical box extension products. About 8% of these are electronic & instrument enclosures, 1% are sheet metal fabrication. 

A wide variety of electrical box extension options are available to you, such as free samples, paid samples. 

There are 2,711 electrical box extension suppliers, mainly located in Asia. The top supplying countries are China (Mainland), Singapore, and India, which supply 98%, 1%, and 1% of electrical box extension respectively. 

Electrical box extension products are most popular in North America, Western Europe, and South America. 

You can ensure product safety by selecting from certified suppliers, including 1,307 with Other, 905 with ISO9001, and 102 with ISO14001 certification.