General description vhbw offers a clever solution with this G4 / F7 filter set, designed specifically for your Zehnder ComfoAir Q350 TR Enthalpie and Q450 ventilation devices. This 8-part kit ensures your ventilation appliance is ready for use again, providing effective filtration to maintain air quality. Technical specifications Dimensions per filter (L x W x D): 50 x 16 x 2 cm Filter class: G4 / F7 Type: coarse dust filter (G4) / pollen filter (F7) Folding: Z-Line Material: synthetic fibre Colour: white Weight: 319 g Compatibility and accessories Compatible with: Zehnder ComfoAir Q350 TR Enthalpie, Q450 Replacement for: 400502013 Installation Filters can be inserted quickly and without tools into the slide compartment of the ventilation unit. Usage The coarse dust filter (G4) removes hair, insects, sand, and other coarse dust from the air. The pollen filter (F7) provides additional protection against fine dust and pollen. Regularly change the filters to maintain optimal filter