27.3 Cu. In. 4 square inch electrical junction box for use with nonmetallic sheathed cable - Machine tapped cover screw holes, cover screws included, rigid hard box construction, no distortion with high temperatures, shatter resistant with low temperatures - In the wall junction box with optional single and two gang plaster ring covers for junction box capacity and device applications - 2 HR fire resistive walls - Fiberglass reinforced polyester - thermoset box - Size: D=2 1/4", W=4", H=4" - Mount with Bottom Mount - Two metal wire clamps factory installed