B-Line Eaton series Grip Strut stair tread, 432" Grating length, 7" Grating width, Steel, 1.5" Channel size, Mill-galvanized, Stair tread, 14 gauge

The Grip Strut stair tread measures 432 inches in grating length with a 7 inch grating width and a 1.5 inch channel size (1.5 inch height). The 7 inch dimension is the depth of the walking surface underfoot; the channel depth is what gives the tread its stiffness across the span between stringers.

Yes, the B-Line Grip Strut stair tread is listed as OSHA compliant, and the perforated grip surface is intended for safe, sturdy footing where non-slip is required. That is the reason it gets specified on plant stairs, mezzanine access and catwalk risers.

The tread is steel with a mill-galvanized finish. Mill galvanizing is a pre-galvanized coating applied to the sheet before forming, so the cut and punched edges are bare steel. It suits covered, interior and light-exposure industrial work; for constant weather, salt or chemical wash-down, specify a hot-dip galvanized after fabrication or stainless tread instead.

It is formed from 14 gauge steel. Fourteen gauge is the common working thickness for Grip Strut walking surfaces in plant and mechanical-room stairs, and the 1.5 inch channel depth carries most of the load rather than the sheet thickness alone. Match the span between your stringers to the load you expect before finalizing.

What is supplied is the tread itself: a 7 inch wide, 14 gauge steel Grip Strut section with a 1.5 inch channel. Carrier plates, nosings and the bolts that fasten the tread to your stringers are separate items, so order those alongside it if the stair is new work rather than a tread swap.

Yes. At 432 inches of grating length the section is normally cut to the stair width on site or in the shop. Because the finish is mill-galvanized, the cut ends are bare steel, so touch them up with a cold galvanizing compound if the stair sees any moisture.