FLX-PRO-R distribution boxes (manifolds) fit the FLX-HDPE and FLX-HDPE-A ducts
in diameter 63mm to help to build an air distribution ductwork in mechanical
ventilation systems (including a heat recovery unit). The low profile plenum boxes
require less installation space than standard solutions, which is very convenient
when they should not be prominent once concealed.
This advantage helps free up usable indoor area. The FLX-PRO plenum boxes are
made from galvanized steel sheet. Special versions made from stainless steel are
available on request. The FLX-PRI is a version of this product with insulation made
from 9 mm thick rubber mat installed inside the plenum box. All plenum boxes are
fabricated with outward pressure welds. The FLX-USZ EPDM gaskets installed in
the plenum box increase the air tightness to class C as per EN 12237.
