supply of aluminium extension ladder 13mtr fully extended (8.00 mtr + 8.00 mtr)aluminium extension ladder 13mtr fully extended (8.00 mtr + 8.00 mtr),aluminium extension ladder 13mtr fully extended (8.00 mtr + 8.00 mtr) made of high tensile aluminium alloy c section 67x31x3.5 mm thickne ss confirming to he - 30 grade t-6 temper as per is:733 of hindalco make steel, made of no slip aluminium alloy, corrugated fluted pipe of 28x3 mm dia. step s 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, addi tional 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 ladde r for 100% twist proof and unbreakable performance. make- skyward, sumer or sj ladders. [ warranty period: 30 months after the date of delivery ] ]