1)grp frp grate drain cover 2)corrosion resistant fire retardant high strength 3)easy ... be cut and assemble 4)ISO9001:2008 1)Name:grp grate drain cover 4)Material:fiberglass & resin & other mixture 3)Surface: ... gritted surface or covered surface 4)Size:we can supply grate height as following:13mm,25mm,30mm,38mm,40mm,50mm,60mm ... easy to be cut and assemble. 2)Usage:walkway,floor,drain cover,platform