Isoferma® access door air- and dust-proof, insulated
with circumferential EPDM hollow chamber seal, with concealed snap locks, for ceiling installation
- Homogeneous appearance of the door leaf due to concealed push locks
- Tool-free operation and simple installation
- Supplied with insulating material
- Detachable door leaf
- Durable powder-coated surface
- Airtightness according to Blower Door Test
- Optional: Insulating frame prevents the existing insulation material from falling out
Tested for airborne sound insulation in accordance with DIN EN ISO 10140-2. The measured sound insulation value is Rw 42 dB. Door leaf with concealed push locks, after installation the closing direction cannot be changed. Galvanised sheet steel, coated white (RAL 9016).
This access door type V2, thermally insulated and airtight, fully complies with standard NF-EN 13829 for installation in residential buildings in accordance with BBC RT 2012.
Test reports can be made available upon request.
Also available as Isoferma R8 with the following charateristics:
Tested for airborne sound insulation in accordance with DIN EN ISO 10140-2.
The measured sound reduction index is Rw 42 dB. This access door type V2, thermally insulated and airtight, fully complies with standard NF-EN 13829 for installation in residential buildings in accordance with BBC RT 2020.
Clear opening: A3 -15 mm x B3
Construction opening dimension: A1 +5 mm / B1 +5 mm
Data Sheet (PDF)
Installation instruction (PDF)
Request for certificate

Isoferma without insulating frame
Order no. | Size A x B (V) | Installation dimension A1 x B1 | Outer dimension A2 x B2 | Clear width A3 x B3 | Depth T1 | Weight (kg) |
---|---|---|---|---|---|---|
22-792 | 550 x 550 | 544 x 544 | 588 x 588 | 518 x 518 | 210 | 5.3 |
Isoferma with insulating frame
Order no. | Size A x B (V) | Installation dimension A1 x B1 | Outer dimension A2 x B2 | Clear width A3 x B3 | Depth T1 | Weight (kg) |
---|---|---|---|---|---|---|
23-523 | 550 x 550 | 544 x 544 | 588 x 588 | 518 x 518 | 210 | 5.6 |
Isoferma R8 complete with insulating frame
Order no. | Size A x B (V) | Installation dimension A1 x B1 | Outer dimension A2 x B2 | Clear width A3 x B3 | Depth T1 | Weight (kg) |
---|---|---|---|---|---|---|
22-893 | 550 x 550 | 544 x 544 | 588 x 588 | 518 x 518 | 240 | 6.5 |
Softline Comfort access doorwith concealed snap locks
without fire protection Ceiling, Solid Wall, Wall multi-wing, Sheet steel coated whiteSoftline Comfort Iso access doorwhite coated, with additional insulation
without fire protection Ceiling, Solid Wall, Wall Sheet steel coated white, soundproof, with insulation