FRP grating is manufactured by interlacing reinforcing glass fibre strands within a polyester resin. Gratings produced using this technique yield a product having 25-35% (by total weight) of fibreglass reinforcement. All grating is manufactured from a premium grade thermosetting polyester resin, thermally cured in the mould. For fire retardant protection, the resins used are complete with antimony trioxide to obtain Class 1 Fire Rating of 25 or less as per ASTM-E-84.
Colour pigmented throughout the resin will be green. Ultraviolet inhibitors are included to meet the specifications of UL-94-VO.