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INDULFLOOR

Three functions combined into a single floor air diffuser.
Air flow control adapted to needs | Sound absorber | optimum discharge setting

Thermal comfort

Excellent ambient air flow through inductive adjustable air diffuser profile.

Innovative mechanism

Air flow control and discharge setting adapted to needs for constant comfort.

Integrated sound absorber

No extra installation necessary. Compact ready-to-use solution.

INDULFLOOR. The flexible floor air diffuser.

Compact, quiet and variable.

INDULFLOOR strenghts

Energy

Demand-based and energy-efficient ventilation with minimal pressure loss offers significant energy and cost savings.

Design

Elegant linear grille made from fine, anodised aluminium. Single or band arrangement also possible directly on the façade.

TECHNOLOGY

Compact read-to-use solution with integrated sound absorber and innovative mechanism for simultaneous air flow rate and discharge setting. Maximum indoor comfort thanks to optimal mixed/source air flow.

Three functions in one system

INDULFLOOR is a compact floor air diffuser with an integrated sound absorber and innovative mechanics for demand-based air volume flow control and discharge setting. The settings can be adjusted either manually or electrically via actuator/controller. The walkable linear grille with support frame and the asymmetrically positioned air connection nozzle allow for flexible installation. Four height-adjustable feet compensate for construction tolerances, while the mounting console provides a simple interface to the raised floor, allowing the floor covering to be applied directly. The integrated pressure tap enables precise on-site air volume adjustment, optionally available as a pressure-independent air volume control with Modbus communication.

  1. Air diffuser: Efficient supply air distribution via inductive air diffuser profile for optimal mixed/displacement airflow
  2. Air volume and discharge setting: Flexible adjustment manually or electrically (optional with actuator or air volume controller) for demand-oriented air supply
  3. Sound absorber: Integrated sound absorber for quiet operation and enhanced room comfort
Visible width of linear grille 113 mm
Length 1100 mm
Total height incl. adjustable feet 193 - 243 mm
Recommended line pressure range* between 30 and 60 Pa
Air flow rate range per outlet 30 - 160m³/h
Sound power level LwA 31 dB(A) at 130 m³/h and 26 Pa
Temperature differential ΔT down to - 6 K
Air flow setting: manual, electrical: 2-stage / continuous / variable control
Technical Data: Download »

* Minimum pressure loss for the version with an electric air flow controller: 2 to 30 Pa, depending on the air volume flow.

Visible width of linear grille 113 mm
Length 1100 mm
Total height incl. adjustable feet 193 - 243 mm
Recommended line pressure range* between 30 and 60 Pa
Air flow rate range per outlet 30 - 160 m³/h
Sound power level LwA 31 dB(A) at 130 m³/h and 26 Pa
Temperature differential ΔT down to - 6 K
Air flow setting: manual, electrical: 2-stage / continuous / variable control
Technical Data: Download »

 

All benefits at a glance

Installation Low box height for problem-free installation in raised floors, without clearance to the façade.
Components Compact, ready-to-use solution: air diffuser, air flow rate and discharge setting (optionally with actuator or air flow rate controller), sound absorbing.
Assembly/installation​ Single-piece for ease and speed of installation.
Commissioning No adjustment needed, factory preset.
Air flow rate control No access hatch needed, as the air flow rate can be adjusted manually from the room or electrically. The pressure measurement nipple is used to measure the set air flow rate.
Ambient air flow + thermal comfort Inductive air diffuser profile for optimal mixing/source flow, independent of the set air flow rate. Subsequent increase or decrease of the air flow rate is possible without impacting comfort.
Acoustics Sound absorbing integrated into the air diffuser.
Cleaning Floor trough of linear diffuser can be cleaned according to VDI 6022 by removing the floor grille and air diffuser profile.
Flexibility Electric actuator or air flow rate controller can be retrofitted from the room side.
Energy Energy-efficient ventilation with minimal pressure loss. Electric adjustment and variable air flow rate control enable energy and cost savings through demand-driven ventilation.
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Designs and Ranges of application

Einzelelement

INDULFLOOR is installed directly onto the unfinished floor. Installation tolerances are easy to compensate for with the height-adjustable feet so that the diffuser can easily be aligned then secured to the floor with the impact-noise decoupled fixing tabs. The INDULFLOOR has an access panel to which the floor covering can be applied directly. The floor panels of the raised floor can be recessed in the area around the INDULFLOOR, thereby reducing the overall installation height. The INDULFLOOR can be installed as a single diffuser or as a band arrangement. 

Bandanordnung

With the band arrangement, a connecting plate is installed between the active diffusers to which the linear grille spacer can then be fitted. This allows multiple INDULFLOOR units to join together as a visually continuous array.

 

Recording and setting

An innovative mechanism ensures an almost constant flow pattern, regardless of the air volume flow. The air flow rate and discharge impulse can be easily adjusted using a slide damper with a scale, accessible from the room. Optionally, a demand-based electric air flow rate adjustment or control with an actuator and Modbus communication is available. A pressure measurement nipple on the room side allows for air flow rate determination.

 

Einsatzbereiche und Einbau Bild

Productinformation und Contact

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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 almost four 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.

© 2025 Kiefer Klimatechnik GmbH