Light Duty Carbon Steel Bar Grating

W = Light Duty Welded

P = Light Duty Press-Locked

S = Light Duty Swaged

Heavy Duty Carbon Steel Bar Grating

W = Heavy Duty Welded

WF = Heavy Duty Welded with Filler Bars

Aluminum Bar Grating

AS = Aluminum Swaged

AI = Aluminum I-Bar

AP = Aluminum Press-Locked

AF = Aluminum Flush Top

Stainless Steel Bar Grating

SW = Stainless Steel Welded

SP = Stainless Steel Press-Locked

SS = Stainless Steel Swaged