B-Line Eaton series Grip Strut four diamond plank, 144" Grating length, 9.5" Grating width, Steel, 3" Channel size, Plain, Grip Strut, 12 gauge steel

Channel size is 3 inches, and product height is the same 3 inches, so the plank's turned-down sides give you a 3 inch structural depth below the walking surface. Allow for that 3 inches of drop when setting support spacing and calculating finished walking elevation over your beams or angle supports.

Yes. The Grip Strut four diamond plank is listed OSHA compliant, and the diamond-pierced surface is intended for safe, sturdy footing where non-slip is required. That makes it a normal choice for elevated catwalks, mezzanine walkways, stair treads and equipment platforms in industrial plants.

Plain finish means bare 12 gauge steel with no galvanizing or coating applied. That is fine for dry interior plant walkways, but for exterior, washdown or corrosive areas you want a galvanized or stainless grating instead, or you will need to paint or coat the plain steel before it goes into service.

Four diamond plank is a single formed piece of 12 gauge steel with pierced, raised diamond openings across a 9.5 inch width and 3 inch deep channel sides that carry the load. Bar grating is welded bearing bars and is usually specified in wide panels for open-area platforms. Plank like this is the usual pick for narrow runs: catwalks, stair treads and single-width walkways, where you want a self-supporting strip you can cut and bolt down instead of a full grating panel.

Yes, it is formed 12 gauge steel and cuts with a metal chop saw or band saw to fit between supports. Cut ends expose bare steel on a plain finish plank, so touch them up if the run sees any moisture. Plan cuts so each piece still lands on supports at both ends, given the 3 inch deep channel sides carry the span.