Tandem 300/385

Product Description

Door air curtains with Tandem technology. Heated and ambient air streams for more effective cold air screening.

Key Features

  • Energy savings of up to 38% compared to conventional systems.
  • Two stacked fan groups for ambient air stream and warm air stream (Tandem technology).
  • For controlled screening of cold air with open doors.
  • Improved use of space Workplaces can be arranged more closely to the entrance.
  • Faster return on investment compared to conventional systems.

Your Benefits

  • 38 % energy savings usingTandem technology.
  • Minimal heating requirement withthe same penetration depth.
  • Valves (optional) can beconcealed behind the casing.


  • Coanda effect to improve the depth of penetration of the door air curtain.
  • Ambient air stream acts as a back-up stream.
  • Adverse energy-intensive turbulence occurs primarily between the outside air and the unheated ambient air stream.
  • Adverse weather stays outside, thanks to the enhanced penetration depth between two parallel air streams of different temperature.
  • High-performance copper/aluminium heat exchanger.
  • Easily removable air filter (grade G 2 in line with DIN EN 779); easy to clean by vacuuming or washing.
  • Anti-torsion mechanism for heating connections prevents damage to the heat exchanger when screwing in the valves; valves optionally available as accessories.

Areas of application/installation

  • Versatile use in showrooms and sales floors of all kinds, malls and public buildings.
  • Wall or ceiling-mounted.
  • Modular design enables multiple devices to appear as a single visual unit.
  • Installation also possible with casing provided by customer or concealed withint the suspended ceiling
  • Lengths 1.0, 1.5, 2.0, 2.5 and 3.0 m (Tandem 300).
  • Lengths 1.5, 2.0 and 2.5 m (Tandem 385)
  • Suitable for mounting heights of:
    • 2.7 to 3.4 m (Tandem 300)
    • 3.5 to 4.0 m (Tandem 385)

Also good to know

  • Also available as an electric unit (Tandem 300 Electric), for even faster installation and a wider range of applications.
  • KaControl system or electromechanical control possible.
  • Integration in KaControl networks or building automation systems, such as BACnet, Modbus or LON possible.
  • Special designs, such as vertical unit above doorway on request.