Designed to meet NEMA 1, 2, 4, 4x, 12, 13 and IP66 ratings. Made from durable ADC-12 aluminum alloy. Self-adhesive EPDM gasket easily attaches to cover. Molded-in mounting flanges located along the short side of the box. Cover attaches with 4 or 6 stainless steel, thread-forming screws. Most models have internal card guides for mounting PC Boards or partitioning. Easily machined and modified to your particular needs. Card Guides, Sealed. Cover include design. Natural finish. External measures 4-1/2" length by 2-1/2" width by 1-7/32" height; internal measures 4-3/8" length by 2-3/8" width by 1-3/32" height.