Free-stand enclosures mild steel, two-door single access, type 12. Seams continuously welded and ground smooth, no holes or knockouts. 12 gauge steel. Stiffeners on back of two-door enclosures maintain flatness and increase rigidity. Lifting eyes for easy handling. 3-point latches operated by oil-tight key-locking handle. Latch rod rollers for easy door closing. Heavy-gauge continuous hinges support each door. Data pockets are high-impact thermoplastic. Internal mounting channels welded horizontally to sides at top, bottom and center. Optional panels and rack mount angles can be mounted anywhere along channels. Oil-resistant door gasket. Bonding provision on door. Provision for mounting fluorescent light. Finish: white polyester powder paint inside with ANSI 61 grey polyester powder paint outside over pre-treated surfaces. Optional panels and side-mounted panels have white enamel or conductive finish. Swing out panels, rack mounting frames, heavy-duty panel supports and center panel supports are white.