These are folded steel profiles which may be fitted to the rear of the Lande ES455 Series wall cabinets. The mounting-profiles have two sets of perforations to take cage nuts to fix equipment across the rear of the rack and accessories, such as shelves and chassis guides, inside the rack. They have three apertures for cage nuts per 1U on the front face, two per U on the inner face and are printed with 'U' height measurements to aid installation. Sold in pairs. Finish: Plated.