supply of aluminium extension ladder 11m.aluminium extension ladder 11m.,aluminium extension ladder 11m.aluminium ladder extension wall support ladder 24/40 a s specification given below aluminum alloy wall support extension ladder proved with top hand rails and platform steps made of 26* 3 mm round corrugated flutted pipe main extrusion made up of aluminum alloy section 66*32* 3.18 thickness of he 30 grade t6 tempe hindalco make closed height 24 feet additional msguide pipe fix ed inside height 40 feet additional msguide pipe fixed inside of the ladder at 1 mtr internal for stability of ladder a rms. [ warranty period: 30 months after the date of delivery ]