supply of aluminium extension ladder 13mtr fully extendedaluminium extension ladder 13mtr fully extended,aluminium extension ladder 13mtr fully extended (8.00 mtr + 8.00 mtr) made of high tensile aluminium alloy c section 67x31x3.5 mm thickness confirming to he - 30 grade t-6 temper as per is:733 o f hindalco make steel, 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 pulle y, rubber shoes at the bottom safety, additional ms guide pipe mixed inside the ladder at 1 meter interval f or stability of ladder, ladder fabricated by expanding and flaring runs with stiles of the ladder for 100% twi st proof and unbreakable performance. [ warranty period: 30 months after the date of delivery ] ] => limited