vhbw - the clever way G4 / F7 filter pack of 4 for your ventilation unit. For pure, allergy-friendly indoor air. Replacement for your current air filters. Filter change without tools. All compatibilities and technical details can be found below. With these replacement filters from vhbw, your ventilation unit will be ready for use again in no time. The coarse dust filter removes hair, insects, sand, and other coarse dust from the air drawn into the unit. The pollen filter also protects you against fine dust and pollen. Thanks to these filters, pollen and dust particles from the outside air are prevented from entering the ventilation system. The filters can be inserted quickly and without tools into the ventilation unit's slots. To maintain the filter performance of your ventilation unit, the filters should be changed regularly. This filter set allows you to upgrade your ventilation unit to pollen filter class (F7) without installing an external pollen filter housing. NOTE: The air direction is marked on the filter elements. Scope of delivery: 4x filters (G4 / F7) Technical data: Dimensions per filter (L x W x D): approx. 50 x 17 x 1 cm Filter class: F7 (red pollen filter) / G4 (black coarse dust filter) Type: pollen filter / coarse dust filter Material: synthetic fiber / plastic Color: black / white / red Weight: 584 g Suitable for the following device models (Ctrl + F / Cmd + F to search for your model): Zehnder ComfoAir 350, 550, 300 Standard, 375 Standard, Zehnder ComfoD 300, 350, 450, 550, Paul Santos 370, 570, Wernig G90-380, G90-500, G90-550, Wernig ComfoAir 350, 550, Aeris 350, 450, 550, R+F ComfoAir 450, R+F Optiline KWL 350, Sanibel ComfoAir 350 Replaces the following Origin