Zehnder Filter set Coarse 60% (G4) + ePM10 50% (M5) for ComfoAir 70 990 323 554 The Zehnder 220 mm x

The Zehnder 220 mm x 90 mm self-seal insulated ducting is perfect for meeting Building Regulations for insulation

SIzes: 29x15cm and 29x6

Model HRV1 Q+ Version TP400 and TP400A

The fan will switch off at the end of the overrun time which can be altered by adjusting the sensor

Back draught flap and

Zehnder Filter set Coarse 60% (G4) + ePM10 50% (M5) for ComfoAir 70 990 323 554 The Zehnder 220 mm xThis filter set consist of: 1x Anti Pollen Filter: This is also know as ePM10 50% (ISO 16890) or M5 (EN 779: 2012). At least 50% of particles between 0. 3 and 2. 5 m are removed from the air. 1x System Protection Filter. This is also know as Coarse G4 Filters, 60% (ISO 16890): At least 60% of particles larger than 10 microns are removed from the air.