supply of double sealed emergency window glass unit and double sealed non openable window glass for vande bharat coachdouble sealed emergency window glass unit and double sealed non openable window glass for vande bharat coach,double sealed non openable window glass size 1560x860x26mm.as per item no 1 of icf drg.no:t rain18/mc/ac-5-4-001 for vande bharat trainset.(6mm toughened glass one side,4mm+4mm float glass anot her side filled with argon glass) [ warranty period: 30 months after the date of delivery ] ] , double sealed emergency window glass unit for vande bharat coach, size 1560x860x26mm (bot h side 6mm toughened glass with 14mm gap filled with argon/krypton gas) as per icf drawing no. ts/mc-5-4-0 01, alt-d item no. 10 [ warranty period: 30 months after the date of delivery ] ]