B-Line Eaton series Grip Strut two diamond plank, 120" Grating length, 4.75" Grating width, Steel, 1.5" Channel size, Plain, Grip Strut, 12 gauge

Yes, the Grip Strut two diamond plank is listed as OSHA compliant, and the serrated diamond openings give the non-slip footing that requirement is about. That is the usual reason it gets specified on mezzanines, platforms and stair treads in plants where a facility inspector is looking at slip resistance.

Plain means bare steel with no galvanizing or coating applied. It is fine for dry interior work, but for exterior, washdown, or corrosive areas you want a galvanized or coated version instead, or you field-paint it. Ordering plain for an outdoor catwalk is the most common mistake on this part.

The two diamond designation refers to how many rows of diamond openings run across the walking surface, which is what sets the width. This one is a 4.75 inch two diamond plank. If you need a full walkway in a single piece rather than ganging planks, step up to a wider multi-diamond plank or full grating panel; if you are covering ladder rungs or a narrow tread, two diamond is the right size.

The plank forms a 1.5 inch deep channel, and overall height is 1.5 inches, so allow at least that much depth below the finished walking surface for the turned-down legs and your support steel. That depth is also what gives the plank its stiffness between supports.

A full 120 inch plank weighs 3.2 lb, so one person can carry and set it without a lift. The 12 gauge steel keeps it light enough to handle overhead on a platform build while still taking foot traffic.