DuoFlex installation frames

The Duo Flex installation frames are available for wall thicknesses of 110 mm to 400 mm. They absorb variations in the wall thickness (-5 mm to +10 mm), which means they are suitable for both new construction and renovation. Moreover, the frames are quick and easy to install.

Stable construction for varying wall thickness

A very stable, symmetrical construction is created by the unique mitre joint. This means heavier Theuma doors can also be installed, problem-free. The frames are also available in fire/noise/burglar-resistant versions. Theuma applies plaster in the factory for the 30-minute fire-resistant window frames design. For the 60-minute fire-resistant design, the frames must be filled with plaster at the construction site.

Why choose DuoFlex installation frames from Theuma?

  • ready to install
  • can be used for variations in wall thickness
  • quick, easy installation
  • available in all RAL and NAC colours

> Would you like to order Theuma Duo Flex frames? Contact us.

Quality finish

All installation frames are made from steel with a material thickness of 1 mm or 1.5 mm. The frames comes as standard with a high-quality scratch and shock-resistant lacquer paint layer in white (RAL 9010). The frames are painted in our own paint shop in Nijkerk using Electro Powder Coating (EPC). This guarantees long-term protection for the window, and it does not require to be painted over. All NCS and RAL colours are available on demand.