A fan-tray RFQ can describe two very different purchases: a fabricated carrier ready for the buyer’s components, or a powered cooling assembly with fans, wiring and controls. Both may appear under the same search term. If purchasing does not separate them, two apparently competitive quotes can cover different bills of material.
For an OEM program, start with the delivery boundary. A tray drawing establishes the metal geometry; it does not automatically specify airflow, electrical protection, monitoring or replacement while energized. DRAmetal’s custom sheet metal fan trays focus on the drawing-defined carrier, mounting features and agreed mechanical assembly. List any purchased-component installation separately.
Decide what arrives in the shipping box
An empty tray normally needs a material, finish, hole pattern, folded envelope and mounting interfaces. A populated mechanical assembly adds component part numbers, installation methods and responsibility for supplying them. A powered module needs further electrical and functional acceptance defined by the system owner.
For comparison, Orion Fans’ fan-tray datasheet describes complete products with specified fans and electrical characteristics. Those catalog ratings belong to those products; they are not performance values for a custom sheet-metal carrier.
| Purchase scope | RFQ must identify | Acceptance boundary |
|---|---|---|
| Empty fabricated tray | Released drawing, material, finish and hardware | Dimensions, finish and mechanical fit |
| Tray with installed parts | Buyer or supplier sourcing, approved part numbers and assembly instructions | Agreed installation and traceability checks |
| Powered cooling module | Electrical design, fan controls, wiring and functional test | System-defined electrical and cooling validation |
Release the interfaces, not only the outside dimensions
The tray envelope is only one fit condition. Show fan aperture geometry, mounting-hole locations, gasket or isolator interfaces, cable-support points and the chassis attachment. Where a removable tray runs in rails, identify the rail datum and clearance after finishing. A nominal fan size is not a substitute for the selected manufacturer’s mounting drawing.
Also review assembly order. A screw that is accessible before the neighboring fan is installed may become inaccessible afterward. State whether a guard, divider or harness support must be removable without disturbing the fan row. These decisions can change the formed geometry before they change the purchased component list.
Allocate purchased parts and substitutions
A clear bill of material has separate columns for manufacturer part number, supply responsibility and substitution authority. Include the approved revision when a component drawing is controlled. If the buyer supplies fans, specify packaging, incoming inspection and the process for shortages or damage.
Do not leave harness length, connector orientation or fastener length to visual interpretation. A supplier may be able to install specified parts without owning their electrical design. Conversely, requesting component selection or a test fixture is additional engineering work that should be visible in the quotation.
Keep serviceability separate from hot-swap performance
A handle, latch and removable guide arrangement can make a tray mechanically serviceable. They do not establish safe replacement under power. Connector sequencing, control behavior, electrical protection and system procedures must support any hot-swap claim.
For a mechanically removable tray, define the extraction path, accessible grip and connector disengagement distance. Check that the tray can be removed without pulling a fixed cable or striking adjacent equipment. Review blind-mate alignment when insertion brings hidden interfaces together.
Compare quotes against one acceptance schedule
Attach a short acceptance schedule covering the released metal drawing, installed hardware, component accountability and any assembly records. Put electrical or thermal testing in its own line with the test method, equipment configuration and responsible organization.
Ask each bidder to mark inclusions, exclusions and open questions against that schedule. This is more useful than comparing a single unit price while one quote includes fans and another does not. Once the mechanical and powered-module boundaries are clear, inspection and purchasing can evaluate the same deliverable.
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