Carlon 3-3/4 in. Rectangle New Work 1 Gang Switch Box - Volume 18 Cubic Inches, Length 3-3/4 Inches, Width 2-1/4 Inches, Depth 2-15/16 Inches, Color Blue, Material PVC, Mounting Means Bracket for 3/8 Inch to 5/8 Inch Wallboard - Steel and Wood Stud Mounting. PVC construction for easier installation, greater performance and lower installation cost. Designed and listed for use with non-metallic sheathed cable in accordance with Article 314 of the National Electrical Code.