Floor Box Brass Steel Opening Size 3 1/4 in Opening Shape Rectangular Number of Gangs 1 Conduit Size (2) 3/4 in (2) 3/4 in to 1 1/4 in (3) 1/2 in Hole Dia Not Applicable Length 4 13/16 in Width 6 in Height 2 3/4 in Capacity 39.5 cu in Color Silver Standards UL/CSA UL514