General description vhbw offers a clever solution with this G4 / F7 filter set in an 8-part pack, designed specifically for your ventilation appliance. These replacement filters ensure your ventilation device is ready for use again, providing effective air filtration. Technical specifications Dimensions per filter (L x W x D): 18 x 12 x 4 cm Filter class: G4 / F7 Type: coarse dust filter (G4) / pollen filter (F7) Folding: Z-Line Material: synthetic fibre Colour: white Weight: 55 g Compatibility and accessories Replacement for Zehnder 527005400 Content of delivery: 4x filter F7, 4x filter G4 Installation Filters can be inserted quickly and without tools into the slide compartment of the ventilation unit. Air direction is marked on the filter elements. Usage To maintain the filter performance of your fan, the filters should be changed regularly.