General description vhbw offers a clever solution with this G4 exchange filter set, designed specifically for your air ventilation appliance. This 4-part pack of coarse dust filters ensures that your air purifier is ready for use, effectively removing hair, insects, sand, and other coarse dust from the air drawn into the ventilation unit. This helps maintain a clean and allergy-friendly household environment. Technical specifications Dimensions (L x W x D): 26 x 17.8 x 2.3 cm Filter class: G4 Colour: white Installation The filters can be inserted quickly and without tools into the insertion shafts of the air conditioner. Usage To maintain high filter performance, it is recommended to change the filters regularly. Other information Replacement for Viessmann WUS-25-4 and Viessmann 245045. vhbw provides high-quality replacement parts and accessories to prolong the service life of your electronic devices.