Pultruded fiberglass grating is made using premium grade isophthalic polyester, vinyl ester or phenolic resin systems with a synthetic surfacing veil, making it corrosion resistant, lightweight, and durable. Pultruded fiberglass has a grit surface for safety, and a greater strength to weight ration than molded fiberglass grating. A 35% / 65% resin to glass ratio provides greater strength and less corrosion resistance than molded fiberglass. This product is better suited for longer life spans. For more on pultruded fiberglass grating, click here.