Hinged cold room door 900×2300 mm – negative temperature

Hinged cold room door 900×2300 mm – negative temperature

Designed for low-temperature cold and freezer rooms. 900×2300 mm is the clear opening after installation, not the structural opening size. The selected temperature rating determines the door construction, including leaf thickness, heating, compatible sandwich-panel thickness and threshold type.

Construction

• injected polyurethane insulation, density 43 kg/m³;
• standard surface: 0.5 mm painted steel sheet with polyester coating, white RAL 9010;
• optional stainless-steel surface;
• plastic frame, thermo-welded at 45°, and plastic fittings;
• lock with emergency opening from inside the cold room;
• adjustable hinges with a lifting function while opening;
• a replaceable heating cable is installed in the sealing gasket of negative-temperature doors.

Temperature rating – what changes?

• Down to -20 °C – 92 mm leaf, heated sealing gasket, sandwich wall 80–120 mm, standard thresholds X1 / X3.
• Down to -25 °C – 121 mm leaf, heated sealing gasket, sandwich wall 100–120 mm, thresholds X1 / X3.
• Down to -30 °C – 121 mm leaf, heated gasket and heated frame, sandwich wall 100–160 mm, thresholds X1 / X4.
• Down to -35 °C – 121 mm leaf, double heated sealing gasket and heated frame, sandwich wall 120–200 mm, thresholds X1 / X4.
• Down to -40 °C – 151 mm leaf, double heated sealing gasket and heated frame, sandwich wall 120–200 mm, thresholds X1 / X4.

How to choose the options

1. Temperature rating

Choose according to the lowest actual operating temperature expected in the room.

2. Frame installation location

Sandwich-panel wall (frame B) – intended for an insulated panel and requires the actual wall thickness. Masonry / concrete wall (frame E) – intended for a masonry or concrete opening. According to the drawings, the B-frame wall opening is W + 100 mm and H + 50 mm, while the E-frame opening corresponds to W×H.

3. Wall type / thickness

The sandwich-panel thickness must match the selected temperature construction: -20 °C – 80–120 mm; -25 °C – 100–120 mm; -30 °C – 100–160 mm; -35 and -40 °C – 120–200 mm. For masonry / concrete choose “Not applicable”.

4. Door surface

The base price includes white painted steel RAL 9010. Stainless steel is available with the applicable surcharge.

5. Handing

Determine handing while facing the door from outside the cold room: hinges left = left-hand, hinges right = right-hand. Handing does not affect the price.

Selection guide

1. Determine the required W×H clear opening.
2. Select the temperature rating according to the lowest room temperature.
3. Choose sandwich-panel or masonry / concrete installation.
4. For sandwich panels choose only a thickness compatible with the selected temperature construction.
5. Select the surface and handing.
6. Before preparing the structural opening, verify dimensions against the technical drawing for the selected frame.