I am remodeling my kitchen and am planning on putting in a in-floor heating mat with a programmable thermostat. The instructions for the mat said to install a 4" square outlet box and run condit down to the floor, which I did. I susepect the 4" square box's size is needed to support the cabling and the cutout for the conduit feed.. My question comes from the fact that the thermostat looks this fit on a one-gang outleb box. what covers the 4" square metal box that allows for the thermostat to secure to it as a one-gang box. Also, is there decorative face plates for a 4" box?
Rob