Continuous seam welded 16 gauge steel construction. Hinged cover clamps to the base with keyed quarter turn latch for a watertight seal. External mounting brackets allow box to be mounted on a wall or panel without having to remove the cover and exposing internal components to the environment. Bonding studs for grounding are provided on base and door. Internal panel and hardware included. Designed to meet NEMA type 1, 2, 4, 4X and IP65 ratings. UL Listed. Hinged Door, Lid design. Interior Panel. Easily machined and modified to your particular requirements. Base measures 11-51/64" width by 15-3/4" height by 5-29/32" depth.