Tenders for Supply of Mobile Aluminium Ladder 36 Feet Sides Of Aluminium Shape Channel 75X35x3.5 Mm And Upper Corner Thickness 6.5Mm Step : Aluminium 26 Mm Square Corrugated Tube As Per Is:733-1983 Temper T-6, Fitteted With Safety Lock, Pulley And Rope. Closed Height : 20 Feet Extended ; 36 Feet Ladder Will Be In Two Fold Accepted . Make : Sumer Or Similar. Accepted Make : S J Ladders