Tenders for Supply of Aluminium Ladder 36 Feet Sides Of Aluminium Shape Channel 75X35x3.5 Mm A Nd Upper Corner Thickness 6.5Mm Step : Aluminium 26 Mm Square Corrugated Tube As Per Is:733-1983 Temper T-6, Fitted With Safety Lock, Pulley And Rope. Closed Height : 20 Feet Extended ; 36 Feet Ladder Will Be In Two Fold . Make :- Sumer / S.J. Laders Or Simil Ar Warranty Period: 12 Months After The Date Of Delivery