A 40 mm fire-rated invisible door system, designed for existing European production
The A2B DOORS® licensed system gives door manufacturers the configurations, specifications and production protocols to make invisible fire-resistant interior doors, classified EI1 30, EI2 30 and EI 30.
- NO ROYALTY PER DOOR
- Tested to EN 1634-1
- Classified to EN 13501-2
- 40 mm door leaf
Technical overview
The key facts your technical and quality teams will ask for first.
| Fire resistance test | EN 1634-1 |
|---|---|
| Classification | EN 13501-2 — EI1 30 · EI2 30 · EI 30 Integrity (E) and insulation (I) for 30 minutes, within the tested configurations and field of application |
| Door leaf | 40 mm — standard European interior door thickness |
| Tested door-leaf size | 930 × 2315 mm (width × height of the door leaf) |
| Wall types | Plasterboard (drywall) and brick walls |
| Design | Invisible, flush-to-wall — no visible frame, no exposed hinges |
| Versions | ALU3 EI (fire-rated) · ALU3 Reverse (non fire-rated, push or pull) |
| Production status | Fully documented and ready for technology transfer |
| CE marking | Not yet applicable to internal fire-resisting doors — see note below |
A note on CE marking
CE marking of internal fire-resisting pedestrian doors will become possible once EN 14351-2 is harmonised. Until then, fire performance is demonstrated through the fire test report (EN 1634-1) and the classification report (EN 13501-2), together with the applicable national requirements in your market. A2B DOORS® follows this development closely and will support its licensees in the transition to CE marking.
Two versions. One production system.
Both versions are built on the same 40 mm door-leaf concept and the same ALU3 aluminium profile system.
ALU3 EI
Invisible fire-rated door classified EI1 30, EI2 30 and EI 30, within the tested configuration and its field of application.
ALU3 Reverse
Invisible door for push or pull opening. The reversible concept simplifies product variants and stock management.
PER DOOR
The system is licensed — your doors are not taxed.
There is no fee per door produced or sold. You source the specific ALU3 aluminium profiles from A2B DOORS®; production, pricing and customers are entirely yours.
What is included in the licence?
A complete transfer of the system — technical, legal and commercial.
Technical package
- Full construction drawings (CAD and PDF)
- Material specifications and approved supplier list
- Assembly sequences and installation protocols
- Fire test report (EN 1634-1) and classification report (EN 13501-2)
- Quality control protocol aligned with the tested configurations
- On-site production training — up to 5 days, scope defined in the licence agreement
- Ongoing technical helpdesk support
- Supply of the ALU3 aluminium profiles
Legal & commercial package
- No royalty per door produced or sold
- Use of the fire test and classification reports for the licensed product
- Production and sale under your own brand
- Territorial exclusivity, available for most markets
- Licence agreement in English, French, German or Dutch
- Mutual NDA protection
- Renewal option after the initial period
- Continuity clause if your company changes ownership
- Annual update of the technical and test documentation
Tested. Classified. Documented.
Licensees work within a documented framework: permitted dimensions, hardware and installation requirements follow the test and classification reports.
The full reports are shared under NDA during the licensing process.
From first call to first production
A clear, low-risk route. You only commit after the technical fit is confirmed.
Confidential call
We discuss your company, production capacity, markets and ambitions.
Technical assessment
We review your door-leaf production and confirm compatibility and any requirements.
Licence & training
Licence agreement, documentation transfer and training of your teams.
Production & launch
Start-up support and launch of the range under your own brand, typically about four months after the agreement.
Want to see the full technical package?
Drawings, test and classification reports are shared under NDA. Tell us about your production and we will set up a confidential meeting.
- No royalty per door
- EI1 30 · EI2 30 · EI 30 classification
- Complete technology transfer
- Confidential, no-obligation first meeting
Request licensing information
Tell us about your company. We reply within 2 working days.