Boxes
PEFLEX INOX
PLENUM BOXES
Plenum boxes connect one to several ventilation ducts to supply and exhaust air diffusers mounted in rooms. Their design reduces the speed and noise of the air flowing through them.
The distinguishing feature of PEFLEX INOX boxes is their construction from highly durable, resilient, and weather-resistant stainless steel. Additionally, they are equipped with convenient CLICK system connection sockets for ducts, featuring built-in gaskets to facilitate the installation of the entire system.
PEFLEX Inox plenum boxes are available in standard angled versions, as well as straight-through and directional (for long-range nozzles), as well as countless other variants, making it possible to adapt them to any situation on the construction site.
CLICK
system
more than 100 variants
for
Ø50 Ø75 Ø90 systems
for Ø 100, 125 and 160 mm diffusers
100%
recyclable
certificate
PZH
- made entirely from stainless steel
- as many as 110 variants
- The built-in gaskets and snaps in the CLICK system allow for quick, secure, and airtight installation of ventilation ducts
- integrated mounting brackets
- 3 box types: angular, pass-through and directional
- Customized installation to your needs: on the floor, ceiling, through the wall or with a long-range nozzle
- the possibility to extend the box spigot
- high tightness and durability of the boxes
Choose a perfect box
from more than 100 available
variants
CLICK system couplers
CLICK means fast and tight
The CLICK system used in our couplers enables very fast installation of ventilation ducts into the plenum boxes with just one movement, without the need for manually fitting gaskets onto the ducts or using specialized tools.
PEFLEX duct connection guide
1
Before inserting the duct into the connection socket, use a special PEFLEX cutter to cut its end straight.
2
Thanks to the gasket mounted inside the socket, there is no need to apply it as a separate element on the duct.
3
The trimmed ventilation duct should be inserted into the socket of the box until you hear a “click!”
4
Install the remaining PE-FLEX ducts into the box in the same way.
1
Before inserting the duct into the connection spigot, use a dedicated PEFLEX cutter to ensure a clean, straight cut at the end.
2
Thanks to the integrated gasket inside the spigot, there is no need to manually apply a separate seal onto the duct.
3
Push the trimmed ventilation duct into the spigot of the box until you hear a distinct “click!”
4
Install the remaining PEFLEX ducts into the plenum box following the same procedure.
More than 100 variants
Choose optimally for your needs
PEFLEX INOX plenum boxes are available in virtually any configuration, allowing for the design and implementation of a ventilation system perfectly tailored to the building’s needs.
Three types of boxes: angular, straight-through, and directional, with the possibility of connecting various numbers of ducts of three diameters, as well as different sizes of ventilation valves, provide a vast number of options to choose from.
Different types of installation
Perfect for any situation
PEFLEX INOX plenum boxes have mounting ears on both sides and are suitable for both floor and ceiling installation.
The universal design also makes it possible to hide them under the floor, as well as to install them in the ceiling and directly embed them in concrete.
Straight-through or directional versions also facilitate wall mounting of the boxes.
Robust and durable
Entirely made of
stainless steel
We focus on quality. Therefore, our PE-FLEX INOX plenum boxes are manufactured entirely from thick stainless steel, ensuring exceptional robustness and resistance to various operating conditions, as well as long-term reliability. The welded construction, combined with CLICK system connection spigots, maintains high airtightness throughout the entire installation.
Adjustable length of the spigot
Without additional extensions
PEFLEX INOX plenum boxes come standard with a 53 mm long spigot in either socket (for connecting the diffuser frame) or nipple (for extension) versions. Additionally, it is possible to order boxes with a pre-fabricated spigot up to 500 mm in length, eliminating the need for additional extensions on site.
ARCHITECT'S ZONE
A good installation starts with the design! Therefore, entrust its execution to specialists or become one yourself if you already have experience in this field. With our design guidelines, you will learn how to design the best-fit recuperation systems for the building, the contractor and the user.
The Architect’s Zone is an invaluable collection of tips, guidelines, standards and rules for designing mechanical ventilation systems with heat recovery.
ARCHITECT ZONE
A good installation starts with a project! Therefore, entrust its execution to specialists or become one yourself if you already have experience in this field. With our design guidelines, you will learn how to design the best-fit recuperation systems for the building, contractors and users. The Architect Zone is an invaluable collection of tips, guidelines, standards and rules for designing mechanical ventilation systems with heat recovery.
RECUPERATION ABC GUIDE
If you are planning or installing mechanical ventilation, be sure to download the free guide!


