B-Line Eaton series Grip Strut stair tread, 288" Grating length, 11.75" Grating width, Steel, 1.5" Channel size, Mill-galvanized, Stair tread, 14 gaug

No. The T51514 24 GL tread is 288 inches long, which is a 24 foot length, not a 24 inch stair width. If you need treads for a 24 inch stair run you would cut this length down or order a tread made to that width. The walking surface depth is 11.75 inches and the channel depth is 1.5 inches.

The Grip Strut tread is listed as OSHA compliant. The perforated, serrated planking gives the slip resistant footing OSHA expects on industrial stairs and platforms, and the 11.75 inch tread depth covers a standard stair run surface.

Mill-galvanized steel is the finish on this tread. That coating handles normal outdoor exposure and damp industrial interiors, but cut ends are left bare steel, so any field cut should be touched up with a zinc-rich coat. For constant chemical exposure or salt spray, a hot-dip galvanized or stainless tread is the better call.

Channel size sets the stiffness and the span the tread can carry between supports. This one is a 1.5 inch channel in 14 gauge steel, which suits stair treads and walkways on typical stringer spacing. Deeper channels are for longer unsupported spans or heavier rolling loads; if your stringers are set wide apart, size up rather than deflect the tread.

Allow 1.5 inches of depth below the walking surface. That is the height of the tread, so the stringer or support angle has to give it that much room without fouling the riser below.

What is supplied is the 288 inch mill-galvanized steel plank itself, 11.75 inches wide. Nosing, end plates, and the bolts or clips to fasten it to the stringers are separate items you order with it.

It is listed at 4.2 lb, and the 14 gauge steel keeps it light enough for one person to carry and set in place. A 288 inch length is awkward on its own, though, so two hands on a stair tower is the practical approach.