fiberglass frp/grp heavy duty grating, mesh 1.5X1.5", rib:12/9mm, THK: 50- 63mm, UV-stable, ABS certi, ASTM-E84 fire resist Fiberglass grating, FRP / GRP molded and Pultruded grating professional factory:About Our Products:Resin:Ortho Polyester (GP), Iso polyester (ISO) , Vinyl ester (VE) , PhenolicThickness:any between 12.6mm to 63mm (such as 12.6mm, 15mm, 20mm, 25mm, 30mm, 33mm, 38mm, 40mm, ...