Ventilus stand with heat recovery units and blue flexible duct manifoldsVentilus counter with blue duct couplings and flexible elbowTermitech counter with Ventilus heat recovery units and TQD Arkon diffusersVentilus TQD 400+, 450 Q1 and 250 Compact heat recovery unitsOpened Ventilus heat recovery unit exposing its fan and pleated filterTermitech stand crowded around Ventilus and TQDinvent unitsTermitech stand with TQD invent manifold boards and Ventilus unitWide view of Termitech duct distribution and Ventilus unitsTermitech shell-scheme stand with TQDinvent display boardsTQD invent distribution boxes and flexible ducts at Termitech stand
