Insulated cold room door for chilled and frozen rooms — also searched as cold room door, freezer door and walk-in freezer door.
A thick PU-insulated door that holds the room temperature, seals out warm humid air and keeps running cycle after cycle. Built to your opening, your temperature band and your RAL colour — from prototype to full production runs, by a cold storage door manufacturer operating one factory since 1999.
One idea: the door is the weakest point in any cold room. A thin or poorly sealed door leaks cold air, draws in moisture and drives up the compressor load. This door is engineered to be the tightest, best-insulated part of the envelope.
Every opening of a cold room swaps cold dry air for warm humid air. The result is ice on the frame, a wet floor, product loss and an overworked refrigeration plant. The fix is a door with enough insulation to stop condensation on the warm face and a continuous seal that closes the air path on all four sides.
RAX builds each cold storage door to the room it serves — chilled produce at 0–5 °C, frozen storage at −18 to −25 °C, or deeper blast and deep-freeze duty — matching panel thickness, seal type and hardware to the temperature band. Panel thickness, heating options and the final U-value are confirmed on your specification, and every unit is made to order from a single door, in any size and any RAL colour.
Temperature bands and panel-thickness guidance are industry-typical ranges for cold room construction; RAX confirms the exact rating for your room per project. The U-value is stated as a “down to” marketing reference for the insulated panel, not a tested door-set figure. RAX products are validated from −30 °C cold storage to +50 °C desert conditions.
Every door is engineered to your opening and your room temperature. The values below are the validated baseline; final figures are confirmed on your specification. Each row states whether the value is RAX-measured, industry-typical or set per project.
| Parameter | Specification | Basis |
|---|---|---|
| Door Type | Insulated cold storage / cold room door (hinged or sliding configuration). | Product definition |
| Insulation Core | High-density PU foam panel, 100 / 150 / 200 mm thickness selected to match the room temperature. | Per project |
| Temperature Band | Chilled 0 to +5 °C, frozen −18 to −25 °C, and deeper deep-freeze duty on request. | Industry-typical |
| Thermal Performance | U-value down to 0.33 W/m²K for the insulated panel construction (marketing reference, not a door-set test). | Marketing value |
| Cycle Life | 100,000 cycles validated in the RAX 100,000-cycle fatigue test lab. | RAX-measured |
| Sealing | Continuous silicone rubber perimeter seal; compression gasket on all four sides to close the air path. | RAX build |
| Panel Skins | Galvanized steel sheet (0.4–1.5 mm); stainless steel 304/316 available for hygienic and washdown rooms. | RAX build |
| Frame | Aluminum alloy profile 6063-T5; thermal-break frame detail to limit cold bridging. | RAX build |
| Anti-Freeze Option | Heated frame / track and heated bottom edge for sub-zero rooms to keep seals flexible and guides ice-free. | RAX option |
| Safety | Internal safety release, anti-pinch edge; vision window (clear PVC / polycarbonate) optional. | RAX build |
| Operating Range | Validated from −30 °C cold storage to +50 °C desert conditions. | RAX-tested |
| Fire Rating | EI60 / EI120 available — engineered and tested per project. | Per project |
| Max Opening | Custom to your opening — confirm on technical layout. | Per project |
Need a U-value, air-permeability or fire figure certified for tender? We arrange third-party test data against the matching standard per project — see Compliance below.
Validated substrates, processed in-house on an auto PU foam panel line and CNC punching/bending centre. No outsourcing of the insulated panel or the structural frame.
Match the panel thickness and seal to the room duty — chilled, frozen or deep-freeze.
Your installers get the full document set before the door ships — the same package our EPC and distributor clients rely on.
Certificates we hold today, and the project-specific test data we arrange against the matching standard. We state held vs. per-project so you can tender honestly.
Rigorous 100,000-cycle fatigue testing, validated galvanized steel and aluminum alloy materials, and precision manufacturing — performed in-house, not outsourced.
Large industrial doors from prototype to container-load delivery. Start with an OEM sample and scale to container-load branded production.
Every cold storage door is built to your opening and your room. Send the clear opening size, the room temperature band and any washdown or hygiene requirement (or site photos) and our engineers return a proposal, technical confirmation and lead time.
From custom engineering to container-load delivery — the document set your local installers need.
Warranty: door body 2 years · operator/motor 3 years · servo motor 5 years. Free spare parts within warranty (DHL/FedEx 5–7 days). Lead time: sample 7–15 days · standard container 12–20 days · custom first order 20–35 days.
Panel thickness follows the room temperature. Chilled rooms around 0–5 °C typically use 100 mm, frozen rooms at −18 to −25 °C use 150 mm, and deeper deep-freeze or blast rooms use 200 mm. These are industry-typical guidelines; RAX confirms the right thickness and the resulting thermal performance for your specific room on the technical layout.
The door is configured for chilled duty (0 to +5 °C), frozen duty (−18 to −25 °C) and deeper deep-freeze rooms on request. RAX products are validated from −30 °C cold storage to +50 °C desert conditions, and we confirm the exact temperature rating, seal type and any heating package for your room per project.
A continuous silicone perimeter gasket compresses on all four sides to close the air path that causes ice and condensation. For sub-zero rooms we add heated frame / track and a heated bottom edge to keep the seals flexible and the guides ice-free — this is standard practice for freezer doors. The thermal-break frame detail also limits cold bridging.
Yes. Panel skins are galvanized steel (0.4–1.5 mm) as standard, with stainless steel 304/316 available for food, dairy, pharmaceutical and washdown environments where corrosion resistance and cleanability matter.
RAX holds ISO 9001:2015, CE marking against EN 13241 (industrial door product standard) and EN 12453 (operator safety), plus SGS material reports and Product Liability Insurance. Fire rating (EI60/EI120) and AS/NZS 4505 / UL counterpart test data are arranged per project, not held as standing certificates.
Yes. Every door is engineered to your clear opening width and height, fully custom-engineered to your opening in any RAL colour. Full OEM/ODM is supported — private label, packaging printing and manual translation (EN/ES/FR/AR/RU) — under strict NDA.
Sample orders run 7–15 days, a standard container 12–20 days, and a custom first order 20–35 days (repeat custom orders 15–20 days). FOB ports are Tianjin and Qingdao; FCL and LCL are both supported. The door body is warranted for 2 years and the operator/motor for 3 years (servo motor 5 years), with free spare parts shipped by DHL/FedEx within warranty.
Every order includes wiring diagrams, an English installation manual, FAI first-article confirmation and pre-assembly photos, a factory inspection report (insulation resistance, noise, visual and function tests), the 100,000-cycle fatigue test video/report, and the CE Declaration of Conformity with the EN 13241 test report.
Send your opening size (W × H), room temperature band and any hygiene or washdown requirement. Our engineers reply with a proposal and lead time — no obligation.
