Aluminum enclosures often require custom cutouts for buttons, displays, connectors, ventilation, cable entries, mounting holes, and service openings. Machining sequences vary by forming method; extruded, die-cast, and deep-drawn enclosures should be processed according to structural requirements.

For outdoor, humid, or dusty environments, sealing gaskets, end caps, fasteners, drainage methods, and surface treatments require careful verification. Anodized and brushed aluminum finishes reflect aesthetics and surface treatment rather than standalone IP ratings. Final ingress protection depends on the overall assembly, seal design, and test compliance.