vhbw Filter Set Compatible with Paul Santos 370, 570 Ventilation Unit - Air Filter G4 / F7 (Pack of 2), 50 x 17 x 1 cm, White/Red/Black : Amazon.de: Home & Kitchen
Helios KWL EC 270 PRO - G4 + F7 filter set (4 pcs.)
Wolf CWL 300/400 Excellent | G4+F7 | With a discount up to 20%! - KWL-FilterOnline
Maico Luftfilter, Pollenfilter F7, WSF 170
Original WSF 320/470 replacement air filter item no. 0092.0559 from Maico fans, packaging unit 1 x F7, for central ventilation units WR 310, WR 410, WS320 and WS 470 : Amazon.de: DIY & Tools