Switch Box Adjustment Ring Mounting Accessories Material Galvanized Steel Silver Color For Use With Single and Two Gang Boxes - Function Adjusts Switch Box 1/4 in to 1 in Length 3 in Width 2 in Depth 0.25 in to 1 in Box Type One and Two Gang - Cover Material - Cover Type Conduit Size (In.) - - Design Gasket Material - Standards - Includes Two 1 1/8 in Long Screws