Hammond Manufacturing´s Series R240 Watertight Thick Wall Diecast Aluminum Enclosures offer instant installation and replacement (clicks into place with a snap-on device). The lid screws are hidden on the underneath of the base, allowing use of the entire front for keypads, displays, etc. Hammond Manufacturing has designed the R240 Watertight Thick Wall Diecast Aluminum Enclosures to comply with NEMA 4X and IP67.