Switch Box Capacity 12.5 Cubic Inches. Accomodates Non Metallic Sheathed Cable. Gangable With Ears and Tiger Grips With Metal Clad/Flex Cable Clamps. Number of 1/2 Inch Bottom Knockouts 1. Material -Galvanized Zinc. Length 3 Inches, Width 2 Inches, Depth 2-1/2 Inches.