supply of supply of plastic coversupply of plastic cover,supply of plastic cover for route body opened from front side and made of plastic sheet of 10 0 micron thickness of size 685 x 76 mm round shape and in back side 50 mm 100 micron thickness silver c olour cross mark 0.5 mm dia nylon rope to be provided on front side to tie up . [ warranty period: 30 mo nths after the date of delivery ] ] , plastic cover for route body opened from front side and made of plastic sheet of 100 micron t hickness of size 685 x 76 mm round shape and in back side 50 mm 100 micron thickness silver colour cros s mark 0.5 mm dia nylon rope to be provided on front side to tie up . [ warranty period: 30 months after the date of delivery ] ] , supply of plastic cover for route arm open from front side and bottom side made of black pla stic sheet of 100micron thickness. size:- 670mm x 530mm x 86mm. on back side 50 mm wide corner to co rner diagonal cross mark to be painted with white colour covering the entire back side. 5 mm dia nylon rop e to be provided on front side to tie up. note - sample to be got approved before bulk supply. [ warranty period: 30 months after the date of delivery ] ] , supply of plastic cover for calling on signal unit operated from front and bottom side of blac k polyethene sheet of 100 micron thickness 240mm x 220mm x 175 mm with suitable nylon rope of 5mm dia and 1.2mtr length [ warranty period: 30 months after the date of delivery ] ] , supply of plastic cover for shunt signal unit cover operated from front & bottom side of bla ck polythene sheet of 100 micron thickness size of 375 mm x 300 mm x 150 mm and back side 50 mm corn er to corner white diagonal mark of silver color of 100 micron thickness to be provided with suitable nylon rope of 5 mm dia and 1.5 meter length [ warranty period: 30 months after the date of delivery ] ] , plastic cover for shunt signal unit cover is opened from front side and bottom side and made of black polyethene sheet of 100 micron th