supply of supply of plastic cover for shunt signal unit operated from front and bottom side of black , supply of plastic cover for shunt signal unit operated from front and bottom side of black pol yethene sheet of 100 micron thickness 375mm x 300mm x 150mm and back side 50mm corner to corner w hite diagonal mark of silver color of 100 micron thickness to be provided with suitable nylon rope of 5mm d ia and 1.5 mtr length. approval of material sample should be taken from consignee before bulk supply. mat erial should supply at consignee depot sse/s/m/jbp . this item is not available in gem . [ warranty period : 30 months after the date of delivery ] ]