Carlon 4 in. Round Thermoplastic 1 gang Electrical Box Blue

Carlon SuperBlue boxes combine the features of the hard shell thermoset box and the thermoplastic PVC style box to create a new rigid non-metallic wiring box. Molded out of specially formulated thermoplastic material, Carlon Super Bue boxes are so strong they won't crack or break in extreme environments. So rigid, they resist flexing and hold their shape even in the worst applications.