B-Line Eaton series Grip Strut ten diamond plank, 144" Grating length, 24" Grating width, Steel, 3" Channel size, Mill-galvanized, Grip Strut, 14 gaug

It is a 144 inch long plank, 24 inches wide, with a 3 inch channel depth. That 3 inch side channel is the structural leg, so the walking surface sits 3 inches above whatever supports you land it on. Steel, 14 gauge.

The Grip Strut ten diamond plank is listed as OSHA compliant. The diamond openings are punched and formed so the raised edges bite through mud, ice and oil, which is why it gets specified for catwalks, platforms and stair treads where slip resistance is the requirement rather than load alone.

The finish is mill-galvanized steel, meaning the zinc coating is on the coil before forming, so cut and punched edges are bare steel. That is fine for covered industrial interiors, mechanical rooms and equipment platforms. For constant weather exposure, salt air or frequent wash-down, a hot-dip galvanized-after-fabrication or stainless plank is the better call.

14 gauge with a 3 inch channel is the common general-duty combination for personnel walkways and equipment access platforms. The 3 inch formed side channel is doing the spanning work, not the sheet thickness, so the number that matters on your job is support spacing. Set your bearing points to the span your load calls for and the plank decks between them.

Yes, the 144 inch plank is steel and gets cut on site with a chop saw or bandsaw to suit the opening. Because the coating is mill-galvanized, the cut end is bare steel, so hit it with a cold galvanizing compound if the platform sees any moisture.