supply of (1) aluminium extension ladder 13mtr fully extended (2) aluminium raw material used (alloy temper)(1) aluminium extension ladder 13mtr fully extended (2) aluminium raw material used (alloy temper),aluminium extension ladder 13mtr fully extended (8.00 mtr + 8.00 mtr) made of high tensile aluminium alloy c section 67x31x3.5 mm thickn ess confirming to he - 30 grade t-6 temper as per is:733-1975, made of no slip aluminium alloy, corrugated fluted pipe of 28x3 mm dia. steps to be rivetted at 305mm interval, with aluminium lm-6 catcher to lock ladder at every rung, nylon rope and pulley, rubber shoes at the bottom safety, additional ms guide pipe mixed inside the ladder at 1 meter interval for stability of ladder, ladder fabricated by expanding and flaring runs with stiles of the ladder for 100% twis t proof and unbreakable performance. warranty 2 year. [ warranty period: 30 months after the date of delivery ] ] , aluminium raw material used (alloy temper) confirming to (is-733-1975)(latest) double sided a shape platform step ladder, capacity 150 kilo gram, height 6 ft. with total no. of rung-12 nos., appx. wt 20 kg., warranty 2 year. [ warranty period: 30 months after the date of delivery ] ]