INDULSNAP wall air passage

The INDULSNAP is the first wall air passage with integral cross-talk silencer that disappears completely into the drywall. Excellent attenuation values live up to the highest expectations. The proven INDUL discharge profile combines top performance with superior levels of thermal comfort.

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INDULSNAP strengths


The use of free cooling with high temperature differentials creates considerable potential for saving energy.


Integral cross-talk silencers mean no space needs to be taken up in corridors; provision for flexibility within the building grid thanks to a combined diffuser for supply and extract air; low floor height as suspended ceilings are unnecessary.


Draught-free air distribution and room flushing up to a depth of 7 m; input attenuation ≥ 34 dB between 125 and 8000 Hz make separate cross-talk silencers superfluous.


The supply and extract air ducts are preferably located in the ceiling cavity of the corridor. The main distribution lines with the crossing connection lines to the individual rooms are laid here, taking up a minimal amount of space. There is usually very little space available for cross-talk silencers, which prevent voice transmission from room to room. With its integral silencer, the INDULSNAP is the ideal solution for such system concepts.

Sizes 24 / 45 mm slot width
Installation lengths 550, 860, 1000, 1200 mm; special lengths on request
Temperature difference Down to – 8 K
Input attenuation ≥ 34 dB
Flow rate 70 – 250 m³/hm
The classical INDULSNAP ambient air flow

INDULSNAP ambient air flow

The specially developed discharge geometry of the aluminium diffuser profile produces fine individual jets. Ambient air can be effectively induced at the edges of the individual jets. In order to adapt to the respective room geometry, the aerodynamically shaped rockers of the diffuser profile can be adjusted from within the room. Draught-free air flow path up to a room depth of 7 m and 6 air changes per hour can be achieved.


INDULSNAP wall air passage – air flow videos

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Installation situation

The decorative, high quality air guide profiles of the INDULSNAP can be fitted from within the room by means of a snap connector, and removed again just as easily. This facilitates faster progress in the construction work and provides easy access for cleaning purposes to VDI 6022.

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Kiefer Klimatechnik GmbH

Kiefer Klimatechnik GmbH is a leading company in the field of ventilation, air handling and air conditioning technology. Our range of services includes consulting, planning and execution of systems for thermal comfort and industrial air conditioning, as well as the associated installation and maintenance. For more than three decades, Kiefer has also been selling high grade ventilation components worldwide, such as linear diffusers, wall passages, displacement outlets, light and acoustic sails, chilled ceiling panels and concrete core cooling systems, developed in the company's own laboratories.

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