Rack Door Frame
Tall welded or riveted frames are controlled for squareness, hinge datum, latch engagement and rack opening fit.
Data Center Thermal Infrastructure
Rear Door
Rear Door
Heat Exchanger
Fabrication
Precision sheet metal rear-door heat exchanger frames for high-density server racks. We fabricate powder-coated door structures, coil protection panels, hinge-side reinforcement, drip containment trays and mounting hardware for RDHx programs that need consistent rack fit and leak-aware assembly.
✓ 42U / 48U rack formats
✓ Powder-coated steel frames
✓ Hinge, latch and drip-control ready
OEM thermal target
42U
Common Rack Format
Drawing
Door Fit Control
OEM
Ingress Target
RFQ
Hinge Fit Check
01 / What We Fabricate
The RDHx Door Structure for Rack Cooling
A rear door heat exchanger depends on a large sheet metal structure that holds the coil, protects service hardware and still fits the rack. We fabricate the door platform around your rack and thermal package.
Coil Carrier and Guarding
Coil openings, perforated guards, gasket lands and service panels are fabricated to protect thermal components without blocking airflow.
Hinge and Latch Datum
Reinforced hinge rails, latch plates, stops and lift points are checked so heavy doors swing and close predictably.
Coolant Service Hardware
Manifold brackets, hose guides, drip trays and grounding tabs are planned around service clearance and leak-aware routing.
Our scope: the fabricated RDHx door platform
We fabricate the metal door frame, coil carrier, guarding, brackets, trays and hardware interfaces. Your team defines the coil, coolant controls, leak detection and final thermal certification.
02 / RDHx Components
What We Fabricate for Rear Door Heat Exchangers
RDHx assemblies combine rack mechanics, liquid-cooling interfaces and service access. We focus on the fabricated metal platform that keeps the coil protected, aligned and easy to install.
Door Frame Door Frames & Coil Carriers
Welded or riveted steel frames with reinforced hinge rails, protected coil openings and flat gasket lands for consistent rack sealing.
- Format 42U / 48U rack doors
- Material Cold-rolled steel
- Finish Black powder coat
Hinge / Latch Hinge, Latch & Safety Hardware
Hinge brackets, latch plates, lift points, grounding tabs and service stops that preserve door alignment through shipping and installation.
- Hardware PEM / rivet nuts
- Access Serviceable panels
- QC Fit and swing checks
Drip Control Drip Control & Manifold Brackets
Formed trays, hose guides and bracketry for water connections, helping operators keep coolant service points away from electronics.
- Features Trays and deflectors
- Interfaces Hose / manifold mounts
- Fit Rack-specific geometry
Coil Guard Coil Protection & Gasket Lands
Perforated coil guards, flat gasket lands and service panels that protect thermal components while keeping airflow and access open.
- Features Guards and gasket lands
- Material Steel / aluminum
- QC Flatness and edge checks
03 / Technical Capabilities
Typical RDHx Fabrication Specification
Final dimensions, coil interface and coolant hardware are built to your rack and thermal design.
| Rack formats | 42U, 45U, 48U and custom high-density racks |
|---|---|
| Frame materials | Cold-rolled steel, galvanized steel, aluminum options |
| Processes | Laser cutting, CNC punching, bending, welding, hardware insertion, assembly |
| Thermal interfaces | Coil carrier frames, manifold brackets, hose guide plates, drip-control trays |
| Finish options | Black textured powder coat, e-coat base, zinc plated brackets, masked grounding zones |
| Quality checks | Door squareness, hinge fit, latch engagement, gasket-land flatness, coating thickness |
04 / Manufacturing Process
Built for Repeatable Rack Installation
We combine sheet metal fabrication and assembly control so each RDHx door arrives ready for coil installation or final rack integration.
01
DFM & Rack Interface Review
Confirm rack width, hinge datum, swing clearance, coil envelope, hose routing and service access.
02
Precision Cutting & Forming
Control long door rails, vent openings, fastener patterns and gasket lands before welding or riveting.
03
Welded / Riveted Assembly
Build rigid frames with hinge-side reinforcement, insert hardware and verify key assembly datums.
04
Finish, Fit Check & Packout
Powder coat, mask grounding areas, test hinge and latch fit, then pack doors for rack-line handling.
05
Inspection
Check squareness, hinge datum, latch engagement, gasket-land flatness, hardware seating and coating thickness.
06
Rack-Line Packout
Protect finished doors, bracket kits and service panels for rack-line handling, retrofit staging or site delivery.
05 / Why It Matters
What Makes an RDHx Frame Program Work
RDHx doors combine rack mechanics and liquid-cooling service needs. The fabricated frame has to protect both fit and uptime.
Rack Fit
Door width, height, latch position and swing clearance need to match the rack footprint without field rework.
Hinge Alignment
Tall doors need stable hinge datums and reinforced rails so weight does not create sagging or binding.
Coil Protection
Guards, carriers and gasket lands need to shield the coil while preserving airflow and service access.
Leak-Aware Service
Drip trays, hose brackets and manifold supports need to keep coolant service clear of sensitive rack electronics.
Customer Project
Rear-Door Heat Exchanger: Sealing and Condensate Control
Materials, fabrication decisions and results for an anonymous customer project.
Component reference image
The Customer Challenge
Door leakage, escaping condensate and fan vibration transmitted into the rack impaired operation.
Project Measurements & Details
≥30 kW/rackSystem cooling test
≤65 dBNoise
100%Condensate collection
Results apply to the project configuration described on the linked page.
Read the Customer Project → 07 / Why Choose Us
Why OEMs Trust DRAmetal for RDHx Frames
01
Drawing-Based Project Review
Define the mating interfaces, critical dimensions, finish, inspection records and delivery requirements in the released drawing package.
02
Leak-aware hardware design
Drip trays, hose guides, manifold brackets and coolant service points are kept clear of sensitive electronics areas.
03
Large-frame distortion control
Tall door frames are cut, formed, welded or riveted with checks for squareness, gasket-land flatness and hinge-side reinforcement.
04
Data center packout
Finished doors are protected and packed for rack line handling, reducing coating damage and field fit rework.
08 / Related
Related Data Center Cooling Hardware
09 / FAQ
Rear Door Heat Exchanger FAQ
Do you build the full liquid coil?
We focus on the precision sheet metal platform: door frames, coil carriers, protection panels, brackets, drip trays and assembly hardware. We can build around your selected coil and manifold package.
Can you match an existing rack footprint?
Yes. We review hinge datum, latch position, swing clearance, containment interference and hose routing before first article fabrication.
Which finishes work for RDHx frames?
Black textured powder coating is common for rack-facing frames. We can mask grounding zones, plate small brackets and specify corrosion protection for humid mechanical spaces.
Get Started
Need RDHx Frames for a
Need RDHx Frames for a
Data Center Cooling Program?
Send your rack model, coil envelope, hinge side, target quantity and finish requirement. Our engineering team will return a DFM review and quotation.