Plenum boxes for air valves in MVHRs (mechanical ventilation with heat recovery). The FLX-PLO-EPP plenum box is insulated through the use of expanded polypropylene (EPP), eliminating the need for additional insulation. The ergonomic design of the plenum box and the small diameter of the semi-rigid ducting (FLX-HDPE ) make it possible to mount the entire system in the tight spaces in between the ceilings, saving space. These EPP plenum boxes have a TPE gasket on the spigots - such connections with FLX-HDPE ducts are very secure and easy to install. The air distribution system with EPP plenum boxes achieves class C airtightness.
Why should I use EPP plenum boxes?