Before customization, provide the device name and model, overall dimensions, rack width, U height, depth, weight, mounting holes, front and rear panel interfaces, internal modules, and power supply specs. If the device includes displays, fans, hard drives, expansion cards, or special connectors, provide their dimensions and mounting drawings as well.

For rackmount computer cases, focus on confirming the motherboard, power supply, drives, expansion cards, and thermal layout. For rackmount instrument enclosures, provide details on panel displays, test ports, buttons, and measurement modules. For portable rackmount enclosures, also specify handles, protective structures, transit methods, and equipment securing requirements.

Also specify enclosure materials, sheet or profile thickness, surface finishes, shielding needs, target IP rating, rack compatibility, and order quantity. 2D/3D drawings, prototypes, rack photos, and existing sample enclosures will help confirm dimensions, structure, pricing, and production scope.