B-Line Eaton series Grip Strut two diamond plank, 120" Grating length, 4.75" Grating width, Steel, 3" Channel size, Mill-galvanized, Grip Strut, 10 ga

Each plank of the Eaton B-Line Grip Strut two diamond plank runs 120 inches long and 4.75 inches wide, with a 3 inch channel depth. That 4.75 inch width is why it's called a two diamond plank, so for a wider catwalk or platform you lay multiple planks side by side to build up the walking surface you need.

The Grip Strut two diamond plank is listed as OSHA compliant, and the serrated diamond surface is what gets it there: it gives slip resistant footing in the direction of travel where oil, water or ice would make plain plate dangerous. That makes it usable for plant catwalks, mezzanine walkways, stair treads and equipment platforms in facilities inspected against OSHA walking-working surface rules.

Mill-galvanized steel is the finish here, meaning the coil was galvanized before forming, so the cut edges and punched openings are left bare after fabrication. That's fine for dry indoor plants and sheltered industrial areas. For constant wetness, wash-down, coastal air or chemical exposure, you want a hot-dip galvanized-after-fabrication or stainless plank instead, because those bare edges are where corrosion starts.

The Grip Strut two diamond plank is the walking surface only, 4.75 inches wide by 120 inches long with a 3 inch channel. Hold-down clips, bolts and the supporting steel are separate items, so plan on ordering the attachment hardware and framing alongside the planks to finish the platform.

Yes, the 120 inch steel planks are routinely field cut to suit the opening or support spacing. Two things follow from the mill-galvanized finish: your cut ends will be bare steel, so touch them up with a cold galvanizing compound, and plan the cut so the plank still lands on supports at both ends rather than cantilevering off one.