
Lichtenfels
Concept Laser
Lichtenfels
Concept Laser
- Construction of a new production hall and an administration building
- Katherm QK
- KaCool D AF
- KaCool D HY
- ProtecTor
- RRA
Linear duct air diffusers in visible installation combine air routing and air supply in one system.
Our in-house design software for duct air diffusers verifies the hydraulic balancing of the system already during the planning phase. The required balancing elements are factory-installed. In this way, we ensure that the air reliably reaches where it is needed.
The linear round/oval duct air diffusers RRA and ORA generate a highly inductive horizontal air stream in cooling mode. This means that the discharged air is quickly mixed with the room air. As a result, temperature differences and high air velocities are reduced rapidly.


The duct air diffusers are available in different lengths, diameters and slot rows and allow flexible adaptation to different room concepts.
The RRA and ORA are used in both comfort and industrial applications, e.g. in industrial halls, laboratories or in quality assurance.
The round and oval duct air diffusers together form a continuous system that combines functional air routing with a clear and uniform design.
In the RRA round duct system, slot rails mounted in the axial direction and color-coordinated system components ensure a uniform appearance that integrates harmoniously into the room design. Different nominal diameters, numbers of slots, colors and system components enable flexible planning.
The ORA oval duct version complements the system for applications with limited ceiling height. It has an equivalent hydraulic cross-section to standard round duct nominal diameters. Slot rows can be arranged both in the flat area and in the rounded side surfaces, thus enabling air routing adapted to the respective room situation.

We supply the entire pipe system including all accessories such as straight ducts, bends, branches, reducers and sleeves in a uniform appearance.
The round and oval duct air diffusers RRA and ORA serve as both an air outlet and a duct system. They can be installed both horizontally and vertically and used at different points in the air routing system.
Integrated suspension points facilitate installation. Easily accessible inspection openings ensure that maintenance work can be carried out quickly and easily.
Thanks to the integrated eccentric rollers, the air stream direction can be flexibly adapted to the architectural conditions – even during operation. Depending on the setting, different airflow patterns are possible:

Adapt the product to your requirements – these options are available for selection.
DN 150 to DN 900 (RRA)
8 heights, 52 widths (ORA)
1 to 14 slot rows (RRA)
up to 36 slots possible (ORA)
available in a wide range of colors

With our free calculation program you can find the product with the right performance data for your project in just a few steps. You can then download the official technical data sheet with your individual project values as a PDF .

Lichtenfels
Concept Laser

Lichtenfels
Concept Laser
Lichtenfels

Plochingen
Volksbank branch

Plochingen
Volksbank branch
Plochingen

Eindhoven
DomusDela

Eindhoven
DomusDela
Eindhoven

Erlangen
L'Osteria

Erlangen
L'Osteria
Erlangen

Lingen (Ems)
Hofbräu at Wilhelmshöhe

Lingen (Ems)
Hofbräu at Wilhelmshöhe
Lingen (Ems)