Steel City SBEX Steel Box Extension

. Features. – Type: steel.7/8″ maximum adjustable depth.3.5 cu. ft. in. capacity. – Pre-galvanized steel switch box extension. – Fits snugly inside all single gang switch boxes. – Furnished with 1-1/4″ long screws for mounting.Specifications.Dimension:. 7.25″ H x 5″ W x 1.1″ L.Weight:. 0.1 lbs.