Provide cabin dimensions, glazing, expected occupancy, lighting load, surrounding temperature and operating pattern. Check car-top space, ventilation for heat rejection and available electrical power. Cooling capacity should follow a heat-load assessment rather than cabin floor area alone.
Provide lift type, rated load, speed, travel, stops, door arrangement, motor and power supply details. Include safety interfaces, communication requirements and the destination specification. Ask for a defined bill of materials and drawings so cabinet scope can be compared across suppliers.