Four Square Old Work Cut-In Box 1-1/2" w/ Clamps for NM Cable, 50 Pak

This 4 in Square 1-1/2 in Deep Cut-In Wall Box allows installers to add devices speakers strobes alarms and many other devices to existing hollow walls. The 4 in Square hole mounting provision fits many common electrical and electronic devices. 1/2 in conduit knockouts on the sides and back of the box allows bi-directional conduit and cable attachment. Shallow 1-1/2 in depth is great for most wall thicknesses.