Changing the Filter in Zehnder's ComfoAir 350 Ventilation Unit - YouTube
Zehnder ComfoAir 350/500/550 | 1 set of G4 filters | Original filter kit | 2 x compact filter MP plastic 198 x 500 x 14 mm. G4 | WTW filters | 400100085 | 006040220 | 40100 0066666666666666 | 000 6040202 | 006040200 : Amazon.com.be: Electronics
ComfoAir 160 G4/F7 Replacement Filter Set
Zehnder ComfoAir 350/500/550 | G4 | House brand Cardboard | Discount up to 20%! - KWL-FilterOnline
ZEHNDER ComfoAir 350/550, ComfoD 350 G4+G4 ORIGINAL Filterset - 44.90€ - Order high quality filter set online from reliable “AAA“ Credit rating filter company!