Airlocks are the rooms or lobbies between cleanrooms of different cleanliness, and their doors carry a special responsibility: at least one door must stay closed and sealed while the other is used, so the cleaner room is never opened directly to the less clean side. This guide covers airlock doors from the door facts that are stated, and it names the airlock control facts that are not stated, so a buyer can see exactly where the door specification ends and the airlock system specification begins.
The door facts that are stated are the sealing facts. The frame sealing strip seals strongly with noise reduction and sound insulation, and the double-spring rising sweep strip settles smoothly, runs quietly, and seals well at the floor. The leaf behind those seals is the shared cleanroom leaf: aluminium frames, honeycomb core, elbow-operable rounded lock, quiet wear-resistant hinges, stiffeners, and an anti-fog double glazed toughened glass vision panel. Those facts describe a door that closes and seals well, which is the necessary foundation for any airlock door, whatever control system is eventually fitted.
What is not stated, and what this guide deliberately does not describe, is the airlock control system: interlock logic between the two doors, pressure control or pressure difference behaviour, alarms, indicators, and operating sequences. Those are system facts that belong to the airlock design, and the product description used for this site does not give them. A buyer who needs an interlocked airlock should therefore send the interlock requirement as an explicit inquiry item, with the room sequence, the pressure relationship between the rooms, the indicator and alarm requirements, and the failure behaviour required if one door is held open. Until those items are confirmed, the safe specification is a well-sealed door per opening, with the interlock recorded as an open system item.
Door scheduling for an airlock should list each door separately with its leaf arrangement, its brochure or custom opening size, its vision panel size, and its lock requirement, and should also list the pair relationship: which doors form the airlock pair, and which control behaviours are required between them. That schedule keeps the door order checkable and the system questions visible, rather than merging them into a single line that asserts a system nobody has specified.
- Stated: frame sealing strip and rising sweep strip sealing facts, shared leaf construction.
- Not stated: interlock logic, pressure control, pressure figures, alarms, indicators, sequences.
- Send with the inquiry: room sequence, pressure relationship, indicator and alarm needs, failure behaviour.
- Schedule per door: arrangement, size, vision panel, lock; plus the airlock pair relationship.
- Until confirmed: specify well-sealed doors per opening, with interlock as an open item.
Airlock door inquiry list
| Inquiry line | What to send |
|---|---|
| Doors | Each door: arrangement, size, vision panel, lock |
| Pair | Which doors form the airlock pair |
| Interlock | Required behaviour between the pair, subject to confirmation |
| Pressure | Pressure relationship required, subject to confirmation |
How to read the specifications on this page
Dimensions and construction details on this page follow the Lairun product description for the component family shown. Door opening sizes quoted on this site are brochure dimensions: they describe the opening sizes listed in the product brochure, and any non-standard size should be confirmed in the inquiry. Aluminium profile codes are listed by code only; no profile dimension is stated where the product description does not give one. Items that the product description does not specify are marked for inquiry confirmation rather than described as available options, so buyers are not led to assume a mechanism, a load figure, or a material variant that has not been evidenced.
What to put in your inquiry
Send the opening sizes you need, the leaf arrangement, the surface finish you prefer, and the ceiling layout where the components will be installed. State the quantities per size, the site conditions, and the delivery location so the component list can be checked line by line. Where this page lists an item as subject to confirmation, include that item explicitly in your message so it is answered before any order is placed. Please confirm the minimum order quantity and the lead time in your inquiry, because this site does not publish those figures. Certificates are available upon request; please ask for the documents you need and state which project they are for.