... 12.5mm to 100mm 4. Anti skid The FRP Access Grate's advantages:SafetyACME fiberglass grating is recommended when corrosion protection ... FRP Access Grate could be used : Flooring, Platforms, Walkways, Trench Covers, Assembly Lines, Stairs, Gully Covers, Jetties, flooring, etc. outdoor fiberglass flooring ...