supply of densified thermal bonded polyester block [densified thermal bonded polyester blocks for transverse seat. size 1800 x 610 x 50 mm, to drg. no. misc. sk. no. 3746, alt-2, item no. 1. material and specification to rdso specification no. str c-k607[rev.2] december 2015. this item is reserved for procurement from rdso approved sources only. as per drg.no. drg. no. misc. sk. no. 3746, alt-2 specn: rdso specification no. str c-k607[rev.2] december 2015.]densified thermal bonded polyester block [densified thermal bonded polyester blocks for transverse seat. size 1800 x 610 x 50 mm, to drg. no. misc. sk. no. 3746, alt-2, item no. 1. material and specification to rdso specification no. str c-k607[rev.2] december 2015. this item is reserved for procurement from rdso approved sources only. as per drg.no. drg. no. misc. sk. no. 3746, alt-2 specn: rdso specification no. str c-k607[rev.2] december 2015.],densified thermal bonded polyester blocks for transverse seat. size 1800 x 610 x 50 mm, to drg. no. misc. sk. no. 3746, alt-2, item no. 1. material and specification to rdso specification no. str c-k607[rev.2] december 2015. this item is reserved for procurement from rdso approved sources only. as per drg.no. drg. no. misc. sk. no. 3746, alt-2 specn: rdso specification no. str c-k607[rev.2] december 2015. [ warranty period: 30 months after the date of delivery ]