General description vhbw offers a G4 / F7 filter set in an 8-part pack designed for Zehnder ComfoAir 350 ventilation devices. This replacement filter kit ensures your ventilation system operates efficiently by effectively removing impurities from the air. Technical specifications Dimensions per filter (L x W x D): approximately 50 x 16 x 1 cm Filter class: G4 / F7 Type: pollen filter / coarse dust filter Material: synthetic fibre / plastic Colour: white / green / yellow Weight: 511 g Replacement cycle: every 6 months Compatibility and accessories Compatible with: Zehnder ComfoAir 350 Replacement for: 006040200, 006040202, 006040220, 400100085 Installation The filters can be quickly and easily inserted into the slide compartment of the ventilation unit without the need for tools. Usage To maintain optimal filter performance, it is recommended to change the filters regularly, ideally every 6 months. Other information The coarse dust filter removes hair, insects, sand, and other coarse