... .Water proof 2.High impact strength 3.Fire resistant 4.Resistant to acid / alkali fumes FRP Pultruded Grating1, FRP Grating is one ... '4'x13', 4'x12', 4'x8', 3'x10'4'x13', 4'x12', 4'x8', 3'x10'4'x13', 4'x12', 4'x8', 3'x10', 5'x10', 5'x13'4'x12', 4 ... 'x8', 3'x10'4'x12', 4 ...