FRP Grid is made of various resins reinforced with fiberglass, by Molded,Pultrusion, Winding technology. 1.SafetyFRP Grid is recommended when corrosion protection and safety are your goal.2.StabilityExpansion and contraction is 24% and 50% less than aluminum and steel, providing greater dimensional stability.3.DurabilitySuperior durability to Stainless Steel, Aluminum, and Galvanized Gratings, ...