supply of double sealed non openable window glass size 1560 x 860 x 25 mm ( both side 6 mm toughned glass with 14 mm gap filled with argon crypton gas for train -18 coaches. drg. no. icf drg. no. train 18 / mc / ac-5-4-001.double sealed non openable window glass size 1560 x 860 x 25 mm ( both side 6 mm toughned glass with 14 mm gap filled with argon crypton gas for train -18 coaches. drg. no. icf drg. no. train 18 / mc / ac-5-4-001., double sealed non openable window glass size 1560 x 860 x 26 mm ( both side 6 mm toughened glass with 14 mm gap filled with argon-crypton gas ) for train -18 coaches. drg. no. icf drg. no. train 18 / mc / ac-5-4-001. note - m / s saint gobain make medium venus grey tint colour or similar grey colour to be used. [ warranty period: 30 months after the date of delivery ]