Enclosure System Mounting Straps-Brackets: Type - Grid System Strap; Mounting Provisions - Alternating Square Hole and Round Hole Pattern; Fits Nominal Frame Depth - 500 mm; LxWxD - Metric - 323 mm (L); LxWxD - Imperial - 12.71 in. (L); Material - Steel; Material Finish - Galvanized; Manufacturer Series - HMEGS