supply of supply of aluminium alloy wall support extn laddersupply of aluminium alloy wall support extn ladder,supply of aluminium alloy wall support extn ladder close ht 24 feet extended ht 45 feet made of hig h tensile aluminium alloy c section 66 x 32 x 3.16 mm thickness of ohe 30 grade t6 temper of hindalco make steel made of no slip al. alloy corrugated flutted pipe of 28 x 3mm dia steps to be riveted at top 305mm interval ex tendable another locking rubber shoes at the bottom safety top hooks safety hand rails and addl ms guide pipe m ixed inside the ladder at 1 mtr interval for stability of ladder. [ warranty period: 30 months after the date of delive ry ]