GB s retrofit (old work) single gang electrical switch/outlet boxes are constructed of high grade PVC for greater performance with a lower installation cost. They are designed and Listed for use with non-metallic sheathed cable and non-metallic raceway in accordance with Article 314 of the National Electric Code. Features mounting flanges for easy installation. Features For use in retrofit (old work) applications where the wall is enclosed Constructed of high grade PVC for lighter weight and improved performance Includes mounting ears/flanges and adjustable tabs for easy installation Includes 4 NM cable clamps for sheathed cableSpecifications Capacity : 14 cu. in. Weight: 30.42 lbs - SKU: WLLCH20651