supply of supply of 900mm equilateral triangle speed breaker retro reflective sign boards.supply of 900mm equilateral triangle speed breaker retro reflective sign boards., supply of 900mm equilateral triangle speed breaker retro reflective sign boards using avery dennison t-6500 series / 3m 3930 series / dm series type iv astm d 4956 or equivalent brand. high intensity prismatic retro reflective sheeting with 2mm thick aluminum substrate should be properly riveted with ms angle iron frame made of 25x25x3 mm and back side of board should be oven baked painted in gray color, retro reflective sheeting should be weather resistant and show color fastness, minimum co-efficient of retro reflection in candles per lux per sqm. should be as per its table. note : oem avery dennison / 3m / dm or equivalent brand. guarantee / warrantee cum field performance certificate for 7 years of type iv series hip grade retro reflective sheeting should be provided along with supply of boards issued by the oem of reflective tape & jointly sealed & signed by the oem and the convertor. make : avery dennison / 3m / dm or equivalent brand.