DENSIFIED THERMAL BONDED POLYESTER BLOCKS FOR SINGLE SEAT BACK REST SIZE- 38 X 565 X 850 mm FOR II CLASS SLEEPER COACH - SCN AS PER ICF DRG. NO. SCN6 - 6 - 1 - 610, ALT. u/2, ITEM NO.6, CONFORMING TO RDSO SPECIFICATION NO. C - K 607 (REV. 2 OF DEC.