EPP plenum boxes with long connection spigot 3x75 for air valve

The FLX-PLO-EPP-L plenum boxes are part of the FLX-REKU air distribution system designed for domestic mechanical ventilation systems, so-called the MVHR system, to which an air valve and FLX-HDPE / FLX-HDPE-A ducts with a diameter of Ø75 are mounted. 
L version allows to install the valve through a concrete ceiling a or a thick wall. 

The FLX-PLO-EPP-L plenum boxes are made of expanded polypropylene, i.e. EPP, while Ø75 spigots are made of ABS.

Key features: 

• EPP is an insulation material λ=0.0038, the wall thickness is about 8 to 31 mm,
• “double” FLX-HDPE duct fixing - the male connection spigot with a gasket on the inside and EPP casing on the outside,
• the plenum boxes do not corrode,
• long connection spigot (Ød1) for the air valve has 300 mm,
• 2 installation methods - with  screws and wall plugs or with 17-25 mm-wide PB perforated tape.

The FLX-PLO-EPP-L plenum boxes are equipped with TPE gasket on Ød2 spigots as a standard - such connection with FLX-HDPE ducts is airtight and easy to make. For building residential ventilation systems in ATC2 (D) air-tightness class acc. to EN 17192:2018.