Carlon 3-3/4 in. Rectangle Thermoplastic 1 gang Electrical Box Blue

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 blue boxes are so strong they wont crack or break in extreme environments. So rigid, they resist flexing and hold their shape even in the worst applications. The boxes are designed to nest inside each other to take up less space on the shelf or in the truck, while still providing the largest wire fill capacity in their class.