B-Line Eaton series Grip Strut four diamond plank, 144" Grating length, 9.5" Grating width, Steel, 1.5" Channel size, Mill-galvanized, Grip Strut, 12

Each plank of the Eaton B-Line Grip Strut four diamond series runs 144 inches long by 9.5 inches wide, with a 1.5 inch channel depth. Lay planks side by side to make up wider walkways or platform decks, and plan your support spacing around the 12 foot length.

The four diamond Grip Strut plank is OSHA compliant and is intended for safe, sturdy footing where non-slip surfaces are required, which is the usual reason it gets specified for catwalks, mezzanine walkways, stair treads and equipment platforms.

Mill-galvanized steel is the finish here, which gives corrosion resistance suited to damp interiors and sheltered exterior use. Cut ends and drilled holes expose bare steel, so field cuts should be touched up with a zinc-rich coating. For continuously wet, washdown or chemically aggressive areas, specify a hot-dip galvanized or stainless plank instead.

12 gauge is the steel thickness of the plank, and it is the heavier of the common Grip Strut gauges, so it is the one chosen for pedestrian traffic on longer support spans. Combined with the 1.5 inch channel depth, the section resists deflection better than thinner gauge planks of the same width. Load ratings depend on your support spacing, so size the spans from the manufacturer's load table for the 1.5 inch, 12 gauge section.

The diamond count describes how many rows of pierced, serrated diamond openings run across the width of the plank. Four diamond gives the 9.5 inch width here; two and three diamond planks are narrower and are typically used for stair treads and narrow catwalks. If you are decking a walkway, fewer wide planks mean fewer pieces and fewer fasteners; if you are building treads to a fixed tread width, the narrower diamond counts match up better.

It is a decking plank with integral 1.5 inch turned-down channel legs on each edge, so it spans between structural supports but does not replace them. You still need framing, angle or bar supports underneath at the spacing your load requires, plus fasteners or hold-down clips, which are not part of the plank.

Yes. The 144 inch steel plank can be cut down on site with a metal-cutting saw or abrasive blade to suit the opening, and holes can be drilled for hold-down fasteners. Because it is mill-galvanized steel, treat any cut edge or new hole with a zinc-rich touch-up so the raw steel does not rust.