2-Gang Box, Welded, 2-1/2 in. Deep, Eight 3/4 & 1 in. Concentric KO's, Three 1/2 in. KO's, and Six 3/4 in. KO's. Gang boxes save time in installation, no need to gang boxes together. Have 3/4" and 1" concentric KO's for use with a wide variety of wiring methods. Bottom KO pattern, 3-1/2" and 2-3/4" at either end of box. Accepts two styles of covers, flat and 3/4" raised device cover. Use low voltage partitions #947 or #949. Bottom knockouts are at either end of box.