supply of densified thermal bonded polyester block cushion for transverse middle, upper and side upper berth of iii tier ac coaches to size 1795 x 583 x 95 mmdensified thermal bonded polyester block cushion for transverse middle, upper and side upper berth of iii tier ac coaches to size 1795 x 583 x 95 mm, densified thermal bonded polyester block cushion for transverse middle, upper and side upper bert h of iii tier ac coaches to size 1795 x 583 x 95 mm .to item no 6 of rcf drg no ae -61444, alt .f specn. material to rdso spec.no c k -607 rev 2 of dec 2015 [ warranty period: 30 months after the date of delivery ]