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Cleanroom Doors, Windows and Interlock Systems
Unequal Double-Leaf Cleanroom Door
A leaf-and-a-half cleanroom doorset combining one full-size daily personnel leaf with a narrower inactive leaf that releases when occasional equipment needs a wider route.
- Full-Size Daily Active Leaf
- Narrow Secondary Access Leaf
- Compact Wide-Opening Solution
- Sealed Asymmetric Meeting Stile
Product Introduction
The Unequal Double-Leaf Cleanroom Door provides equipment access without making both leaves oversized. The primary leaf operates like a normal single personnel door, while the narrow secondary leaf stays flush-bolted for routine use. Releasing it extends the clear opening for carts, cabinets or production equipment. Aluminum-honeycomb infill keeps the tall unequal leaves light and reduces the load on the asymmetric frame.
Key Features
A narrow secondary leaf adds width only when a larger load must pass.
Honeycomb construction limits hinge loads on both differently sized leaves.
An asymmetric overlapping seal closes the full central meeting line.
Concealed secondary-leaf bolts keep the everyday opening clear of extra hardware.
Customer Product Concerns
Leaf-and-a-half doors must give convenient daily access while keeping the secondary leaf secure, sealed and immediately available for larger loads.
A full double door consumes wall and swing space despite infrequent wide-access demand.The narrow secondary leaf adds occasional width while preserving a standard active leaf.
Staff release the wrong hardware when the secondary leaf is needed quickly.Accessible concealed flush bolts provide a direct top-and-bottom release sequence.
Differently sized leaves can sag and meet unevenly at the centre.Light honeycomb cores, reinforced hinges and adjustable alignment maintain the asymmetric joint.
The inactive leaf rattles under room pressure changes.Positive flush-bolt engagement and compressible meeting seals restrain the narrow leaf.
Typical Applications
Cleanroom personnel routes with occasional equipment transferLaboratory instrument roomsHealthcare equipment accessPackaging areasMaintenance access in compact corridors
Technical Parameters
Typical dimensions for a leaf-and-a-half cleanroom door arrangement are shown below.
| Core Material | Bonded aluminum honeycomb in active and secondary leaves |
|---|---|
| Panel Thickness | 50 mm per door leaf |
| Effective Width | 1200-1800 mm total clear opening |
| Maximum Length | 2400 mm maximum leaf height |
| Steel Facing Thickness | 0.8-1.0 mm powder-coated galvanized steel skins |
| Core Density | 40-70 kg/m³ aluminum honeycomb |
| Thermal Conductivity | 0.06-0.10 W/(m·K) typical honeycomb core range |
| Surface Finish | Smooth powder-coated steel with matching sealed leaf edges |
| Joint Type | Asymmetric paired leaves with gasketed astragal and concealed secondary-leaf flush bolts |
| Customization | Available based on the intended application and operating environment |
Available Options
300-600 mm secondary leafOne or two vision panelsLeaf coordinatorAutomatic drop seals
Planning a Unequal Double-Leaf Cleanroom Door specification?
Send us your dimensions, installation conditions, performance targets and required surface finish.
