Floor Outlet Boxes: Box Type - Floor Outlet; Installation - Wood/Concrete; Material - Cast Iron; Service - Flush; Opening Shape - Round, 1-Gang; Device Capacity - 1-Power Outlet or Communications; Dimensions - 3.50 in. D x 2.96 in. W x 3.18 in. L; Capacity - 13 cu-in.; Entry - Knockouts, 1/2 in.,3/4 in.