The BES Series of non-metallic box extenders adds 5/8 in. of height and 5.3 cu in. to 10.5 cu in. of volume to an existing electrical box The BES Series of non-metallic box extenders adds 5/8 in. of ...
Turn off the power, check the wires with a voltage tester, then disconnect and remove the light fixture. Invert the spray foam can and shove the tube up into the gap between the electrical box and the ...