supply of laminated clear lookout glass as per is:2553 for wap-4 loco as per drawing no.bsl/trs/sk/4/539 alt-1. material to be procured from clw approved sources only. as per drg.no. no.bsl/trs/sk/4/539 alt-1laminated clear lookout glass as per is:2553 for wap-4 loco as per drawing no.bsl/trs/sk/4/539 alt-1. material to be procured from clw approved sources only. as per drg.no. no.bsl/trs/sk/4/539 alt-1,laminated clear lookout glass as per is:2553 for wap-4 loco as per drawing no.bsl/trs/ sk/4/539 alt-1. material to be procured from clw approved sources only. as per drg.no. no.bsl/trs/sk/ 4/539 alt-1 [ warranty period: 30 months after the date of delivery ] [quantity tolerance (+/-): 5 %age , item category : normal , total po value variation permitted : max 8 lacs ] ]