EASY INSTALL: Installation is easy, only requiring a round hole for the shaft collar, and kept in place using two mounting screws ADJUSTABLE: Shaft length is 4 inches but may be cut down to suit different panel thicknesses and grip requirements ADA APPROVED: L-handle design meets ADA requirements. L-handles achieve Nema 12 and IP64 requirements when combined with 315G gasket, sold separately. COMPLETE: Locking Handles are keyed CH751, with dust shutter and two keys included per handle. These handles include 3/8 -24 keps nut. DIMENSIONS: See our dimension specifications or contact us for exact details to ensure a proper fit.