Tender For supply of aluminium alloy wall support extension ladder close height 24 feet, extension height 45 feet made of high tensile aluminium alloy with c section 67x31x3.5 mm thickness 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. 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% twist proof and unbreakable performance