B-Line Eaton series Grip Strut four diamond plank, 144" Grating length, 9.5" Grating width, Aluminum, 1.5" Channel size, Grip Strut, .080" Material th

It runs 144 inches long by 9.5 inches wide, with a 1.5 inch channel size and a 1.5 inch overall height. That 12 foot length is meant to span between supports on a walkway or platform run, and the 9.5 inch width is the tread face you actually walk on. If your walkway is wider, planks are laid side by side to make up the width.

The four diamond Grip Strut plank is listed as OSHA compliant and is intended for safe, sturdy footing where a non-slip surface is required. The diamond openings in the tread let liquid, oil and debris fall through instead of sitting on the surface, which is why it gets used on catwalks, mezzanine walkways, equipment platforms and stair treads.

Model 41512 12 AL is aluminum, not steel. Aluminum is the choice for wet, washdown, coastal or chemically aggressive areas where a painted or galvanized steel plank would corrode, and it is much lighter to handle overhead or on a roof. If the run will see heavy wheeled traffic or high point loads, a steel plank is the usual call instead.

The plank itself is the walking surface only. You supply the supporting structure (channel, angle or bar joist under it) and the fasteners or hold down clips that secure the plank to that structure. The 1.5 inch channel depth on the plank is the return leg it sits on, so plan your support tops to land under those legs.

The diamond count describes how many rows of diamond openings run across the width of the plank, so it tracks directly with width. This four diamond version is 9.5 inches wide, which suits single stair treads and narrow catwalks or is laid in multiples for a wider walkway. Fewer diamonds gives you a narrower plank for tight runs; more diamonds gives a wider single piece and fewer seams on a broad platform.

Aluminum construction keeps the weight down, and the catalog weight figure for this plank is 1.28 lb. It is far easier to move up a ladder or onto a mezzanine than an equivalent steel section, which is a common reason spec writers go aluminum on retrofit work in occupied buildings.

Yes. The same four diamond plank is used for both because the non-slip tread surface is what OSHA is looking for on stairs and walking surfaces alike. At 144 inches long it is normally cut to the stair width required, and the 9.5 inch width lands close to a typical tread depth. Cut ends on aluminum should be deburred before install.