Start with an item-by-item equipment manifest
A useful RFQ begins with every item that will travel in the stack: main units, controllers, drawers, cable packs, mounting plates and loose accessories. For each item, the buyer should confirm the exact make or identifier, quantity, transport orientation, measured length, width and height, individual weight, and whether feet, knobs, plugs or covers remain fitted. Catalogue values can be attached as reference, but the design input should state which dimensions and weights were checked on the actual equipment.
List removable accessories separately and describe where they are stored. A connector panel, wheel board, lid, shelf or cable loom can change both the packed envelope and the handling sequence. Photographs from all sides, with labelled measurement points, help the case engineer distinguish load-bearing faces from controls, vents and other no-contact areas.
Approve the stacking order and loaded centre of gravity
Provide the intended bottom-to-top order, the orientation of each case and any rule that limits which units may be stacked together. The buyer should confirm the total stack height and combined loaded weight, not only the empty-case dimensions. Heavier equipment is often considered for lower positions, but the final order and every interface between cases require engineering review against the actual weight distribution and handling method.
Mark where operators grip, lock, separate and temporarily park each module. If one unit must be removed before another can open, show that dependency in a numbered sequence. Required restraints, locating features, wheel arrangements and structural details are design decisions to be confirmed after the load data is reviewed; they should not be inferred from a generic product photo.
Survey the full door-to-vehicle route
Measure the narrowest doors, corridors, turns, lift entrances and cabin sizes, ramps, thresholds, loading docks and vehicle openings on the real route. Record usable clear width and height, slope, surface changes and any turning restriction. Also confirm whether the stack moves intact or in modules, the available lifting equipment, the planned crew size and the orientation used through each bottleneck.
Map the unloading process as carefully as loading: vehicle position, ramp or liftgate, temporary staging area, order of separation, lid storage and final equipment placement. These buyer-supplied route facts let the engineer check the proposed overall envelope and workflow. They do not, by themselves, establish a load rating, handling performance or suitability for an unreported route.
Close the RFQ with drawing and physical verification
The review pack should combine the dated equipment manifest, annotated photos, route survey and proposed loading sequence. On the drawing, verify internal pockets, contact zones, removable parts, case interfaces, opening directions and the packed and operating envelopes. Record the revision of every changed accessory so an earlier measurement is not silently reused.
Before production, compare the drawing with the actual equipment or an agreed physical checking method. Any unverified dimension, weight, clearance or route constraint should remain marked as buyer confirmation required. Materials, hardware, restraint layout and other construction details are then confirmed by engineering for the approved input set; no certification, capacity, impact level, delivery time or performance result should be assumed without separate written evidence.