supply of aluminium self supporting laddersaluminium self supporting ladders,aluminium ladder 36 feet sides of aluminium [shape channel 75x35x3.5 mm (a nd upper corner thickness 6.5mm) step : aluminium 26 mm square corrugated tube as per is:733-1983 temper t-6, fitted with safety lock, pulley and rope. closed height : 20 feet extended ; 36 feet ladder will be in two fold] . make :- sumer / s.j. laders or simil ar [ warranty period: 12 months after the date of delivery ] , aluminium self supporting ladders, height 8 foot, bottom width 15 inch reach height, feet 8 foot , ladder closed height 8 foot, ladder open height 8 foot, platform size, material aluminium type and duty type self supporting strength type strong step details number of steps 1-20, step type flat capacity minimum loa d capacity, kg 160 ,generic fitted bottom rubber,side lock,side plug locking system no, safety code as per is 3696-2 (latest) . [ warranty period: 12 months after the date of delivery ]