Larger than standard NEMA panel used in same sized enclosure. 12gauge steel construction. Larger sizes have 2 or 4 formed flanges for added strength. Slotted corner design for easier mounting. Finished in white or unpainted galvanized. Specifications Material: Steel NEMA Rating: 4, 12 Product Type: Electrical Enclosures Series: EP Subcategory: Enclosures, Racks and Boxes Unit Weight: 26.308 kg