The Holetherm flexible flue gas exhaust system is innovative, reliable, high-quality, and easy to assemble modularly. The Holetherm flexible duct is available in single-layer and double-layer versions. The Holetherm Flex gas exhaust system is certified according to the applicable European CE product requirements in compliance with NEN-EN 1856-2. Additionally, production is subject to periodic inspection by the Materials Testing Institute of North Rhine-Westphalia (MPA-NRW).

LEWO offers a 10-year warranty on the Holetherm Flex system. Holetherm flue gas exhaust systems have been the safest in the Netherlands for nearly 40 years and are made from durable, fully recyclable material.

Click here: More information about Holetherm Flexible (FLEX)

Construction schedule