supply of retro-reflective board .retro-reflective board .,retro-reflective type warning board for neutral section 500 m (pasted with non reflective she et in bluecolour and letters/symbols of retro reflective type -iv high intensity prismatic sheeting in white col our) as per drg.no.re/33/347 mod-b or latest conforming to rdso spg.no. eti/ohe/33a (12/97) rev-8 of si ze 450x750x2 mm. [ warranty period: 120 months after the date of delivery ] ] , retro-reflective type warning board for neutral section 250 m (pasted with non reflective she et in bluecolour and letters/symbols of retro reflective type -iv high intensity prismatic sheeting in white col our) as per drg.no.re/33/355 mod-b or latest conforming to rdso spg.no. eti/ohe/33a (12/97) rev-8 of si ze 450x750x2 mm. [ warranty period: 120 months after the date of delivery ] ] , retro reflective type dj open board as follows, switch off power plate made up of 2 mm aluminium sheet of size 800 x 400 mm pasted with non reflective sheeting of blue col our. letters/ symbols of retro reflective colour, letters/symbols of retro reflective type i v high intensity prismatic sheeting in white colour. ref. rdso . drg. no. re/33/348 mod b & rds o spec. no. eti/ohe/33a(12/97)rev.8 or latest. [ warranty period: 120 months after the date of delivery ] ] , retro reflective type dj close board as follows, switch on power plate made u p of 2mm aluminium sheet of size 800 x 400 mm. pasted with reflective sheet in blue colour an d letters/symbols of retro reflective type-iv high intensity prismatic sheeting in white colo ur. ref rdso drg.no re/33/349 mod b & rdso spec no. eti/ohe/33a 12/97 rev. 8 [ warranty period: 120 months after the date of delivery ] ]