The extension must be factory attached and consists of a guide rail system formed of 38 mm x 38 mm x 6 mm (1.5" x 1.5" x 0.25") thick aluminum angles into which an ultra-strong extension will fit. The posts of the extension are made of 50 mm x 6 mm (2" x 0.25") thick galvanized (or stainless steel) plates. The size of the galvanized steel (or stainless steel) bars shall be 45 mm x 32 mm (1.8" x 1.26"). They consist of a rounded "U" shaped profile with non-slip perforations. The safety extension includes an anchoring system as well as a lifting handle.
