FINNISH ENERVENT PEGASOS filter set includes:
SUPPLY AIR
TIP: Usually a filter of filter class F5 is enough for supply air and exhaust air. If you want to improve the level of filtration, because of pollen allergies among other things, you can for example choose a more effective F7 filter for the supply air and a F5 filter for the exhaust air.
Possible model identifiers are listed below: