Attributes . Octagon Box, Pre-Galvanized, 21.5 cu.in Capacity, 1 Gang, Knockout Cable Entry, 1/2 in (Bottom);1/2 in (Side);3/4 in (End) Knockout Size, 7 Knockouts, Screw Mount, 4 in Length, 2-1/8 in Height, 30.84 lb/100 . Names