Welded corners with steel corner blocks that add strength and rigidity. 12 gauge, roll-formed frame sections for strength. Flange on door and side openings deflect liquids away from the enclosure interior. Rectangular frame holes are designed for metric cage nut fasteners. Round frame holes allow numerous grounding locations using M5 thread-forming screws. Access to both sides of frame mounting holes allows standard components to be easily installed. Provisions for slide-in subpanel, rack mounting and accessory mounting. Simple means for joining frames to create multiple-bay enclosures. An open roll-formed profile design affords complete surface corrosion protection and assembly access. Sealed mounting for all external accessories. Finished with RAL 7035 textured grey polyester powder paint.