304 Stainless Steel Unistrut Channel 1-5/8 inch x 1-5/8 inch x 5 feet long. Holes are 9/16 inch x 1-1/8 inch on 2 inch centers. Metal framing channel can be used for framing and mounting and for constructing load centers and vertical pipe supports. Non-rusting, 304 stainless steel alloy with slot construction, the channel can also be used to create a trapeze for conduit and mechanical piping and to support duct and cable trays. The 12-gauge material can be cut to shorter lengths. Perfect for use in marine areas, food processing or anywhere a corrosion resistant material is required.