Hubbell-Raco 296 1-1/2-Inch Deep 1/2-Inch Side Knockouts 4-Inch Octagon Ceiling Fan Support Box The product is 4" OCT Ceiling Fan Box Easy to use The product is manufactured in China With proper fitting can be used for Conduit, NMSC, Armored, Metal Clad, Flex cable. Plastic Insider provided for NMSC cable. Suitable for ceiling fan installations 15.8cu. in. capacity The maximum support load for ceiling fans 70 pounds and 150 pounds for static light fixtures. Easy installation with a 4 Inch Hole Saw