Carlon BH122A-UPC Switch/Outlet Box, New Work, 1 Gang, 3-7/8-Inch Length by 2-3/8-Inch Width by 3-3/4-Inch Depth, Blue Material: Non-Metallic Color: Blue Wiring System: Non-Metallic Sheathed Cable Work: New Mounting Method: Nails 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 SuperBlue boxes will not crack or break in extreme environments Resist flexing and hold their shape even in the worst applications All PVC boxes are permissible for use with 90 degree C connectors