B-Line Eaton series Grip Strut stair tread, 432" Grating length, 11.75" Grating width, Steel, 2" Channel size, Mill-galvanized, Stair tread, 14 gauge

The Grip Strut stair tread T52014 36 GL is specified at 432 in length by 11.75 in width, with a 2 in channel height. The 11.75 in dimension is the tread depth underfoot, which suits a typical stair run, and the 2 in channel gives the tread its rigidity and the depth you need to plan for at the stringer connection.

OSHA compliant, per the manufacturer spec. The serrated Grip Strut surface is intended for safe, sturdy footing where non-slip walking surfaces are required, which is the usual reason it gets specified on plant stairs, mezzanine access and equipment platforms.

Order by MPN T52014 36 GL from Eaton's B-Line series. To match an existing run, check three things on the tread already in place: the channel depth (this one is 2 in), the tread width underfoot (11.75 in) and the finish (mill-galvanized). If any of those differ, you will get a step height or nosing mismatch rather than a clean match.

The finish is mill-galvanized steel, meaning the zinc coating is applied to the coil before forming, so cut ends and punched edges are bare steel. That is fine for covered exterior stairs, plant interiors and general industrial traffic. For constant wash-down, salt exposure or coastal marine service, a hot-dip galvanized or stainless tread is the better call because the sheared edges on a mill-galvanized part will be the first place rust shows.

14 gauge steel is the standard commercial weight for Grip Strut stair treads and is what most industrial stair applications are built with. Paired with the 2 in formed channel, the depth of that channel does most of the load work, not the sheet thickness alone. If your drawing calls out a heavier gauge or a deeper channel for a long unsupported span, match the drawing rather than substituting this one.

What ships is the formed steel tread itself. Bolts, nuts and any stringer clips or angle brackets you need to land it are ordered separately, so size your fasteners off the stringer punching before the crew shows up. Grip Strut treads are normally bolted through the end of the channel into the stair stringer.

Grip Strut is a single formed sheet with punched, serrated openings, so it is one piece, lighter to handle and it drains and sheds debris while still giving grip in every direction. Bar grating is welded bar stock, heavier per foot, and better where you need high concentrated load capacity or a very long clear span. For access stairs, catwalks and platform steps where slip resistance is the driver, the formed Grip Strut tread is the usual choice, and this one is listed at 4.4 lb, light enough for one person to place.