supply of three type windows in lhb ac coaches.three type windows in lhb ac coaches.,lavatory window with fixed louvers and sealed glass unit for lhb coach es, as per drawing: lw54188 alt a and follow design office l.no. md35131 dated 26/12/2022. pa cking instruction : pi168 ver2.0 or pi193 ver1.0 [ warranty period: 30 months after the date of delivery ] , fixed window for lhb coaches, as per drawing: lw54137 alt c and follow desig n office l.no. md35131 dated 26/12/2022. packing instruction : pi168 ver2.0 or pi193 ver1.0 [ warra nty period: 30 months after the date of delivery ] , emergency openable window, as per drawing: lw54138 alt d and follow design o ffice l.no. md35131 dated 26/12/2022. packing instruction : pi168 ver2.0 or pi193 ver1.0. [ warranty period: 30 months after the date of delivery ]