supply of speed indicator boards, manufacturing, supply, installation and fixing made by supplier at jurisdiction of adra division. speed indicator boards with the size of 1000mm equilateral trangle boards etc. made out of 02mm thick aluminium alloy sheet conforming to is 736 with back support of galvanized angle 25x25x3. the entire face of the board shall be covered with yellow high intensity encapsulated retro reflective sheeting with hlva process. the speed figure shall be cut out by black intensity encapsulated sheeting and provided on the base sheet with hlva process. the speed figure will be supplied by engineer-in-charge. [ warranty period: 30 months after the date of delivery ] => limited