B-Line Eaton series Grip Strut two diamond plank, 120" Grating length, 4.75" Grating width, Steel, 1.5" Channel size, Mill-galvanized, Grip Strut, 14

Each plank runs 120 inches long and 4.75 inches wide, with a 1.5 inch channel depth. That narrow 4.75 inch width is why these get laid side by side across supports to build up a walkway or platform surface to whatever tread width you need, rather than used as a single wide grating panel.

The Grip Strut two diamond plank is listed as OSHA compliant. The punched diamond openings give the non-slip footing, so it is used for catwalks, platforms, stair treads and equipment access where a slip-resistant walking surface is required.

Mill-galvanized steel is the standard finish here, and it suits dry indoor and normally sheltered outdoor use. Mill-galvanized means the coil was galvanized before forming, so the cut ends and punched edges are bare steel and will show rust first. For constant wet, wash-down or chemical exposure, specify a hot-dip galvanized-after-fabrication or stainless plank instead.

Two diamond refers to the number of diamond rows across the tread face, which is what sets the 4.75 inch width. Two diamond plank is the narrow profile: use it for stair treads, single-file catwalks, and filling in around equipment. When you need a full platform in fewer pieces, step up to a wider multi-diamond plank or a grating panel rather than ganging a dozen of these.

Order Eaton B-Line part number 21514 10 GL. That number covers the 14 gauge steel, two diamond, 4.75 inch wide plank in a 120 inch length with the mill-galvanized finish.

The formed channel is 1.5 inches deep, and that is also the overall height of the plank, so figure 1.5 inches of build-up above your support framing when setting finished walking elevation or checking clearance under a door or equipment skid.