Application purpose:
- For installation with plastic ventilation ducts
- For residential buildings (including apartment buildings), hospitals, hostels, hotels, shopping centers, airports and train stations, industrial enterprises
Characteristics:
- fire resistance not less than EI 180;
- suitable for walls with an additional partition and an air gap between them.

Compound:
- perforated fixed sleeve body;
- metal case of the movable sleeve (painted with polymer powder paint);
- thermally expanding material "OGNEZA-TRM";
- movable sleeve seal;
- lamellas;
- fastening eyelets.
Installation Recommendations:
- installation is carried out at temperatures from -50 °С to +60 °С;
- the installation site is pre-cleaned;
- the attachment points should not have cracks, and the thickness of the hard layer should allow the installation of a fixing metal dowel;
- the gap between the sleeve and the channel wall must be less than 5 mm;
- fixing eyes are bent in the plane of the base of the coupling;
- the coupling is installed in the channel, after which the points of attachment of the lugs to the enclosing structure are marked with a marker.
Diameter: DN 160.