General description vhbw offers a G4 / F7 filter set designed for Wernig G90-380 and G90-500 ventilation devices. This 2-part kit ensures your ventilation appliance operates efficiently by providing essential filtration against coarse dust and fine particles. Technical specifications Dimensions per filter (L x W x D): approximately 50 x 17 x 1 cm Filter class: F7 (red pollen filter) / G4 (black coarse dust filter) Type: coarse dust filter / pollen filter Material: plastic / synthetic fibre Colour: red / black / white Compatibility and accessories Compatible with: Wernig G90-380 Compatible with: Wernig G90-500 Replacement for: Wernig EFS 380/550 GF, 400100084 Installation Filters can be inserted quickly and without tools into the slide compartment of the ventilation unit. Usage The coarse dust filter removes hair, insects, sand, and other coarse dust from the air drawn into the unit. The pollen filter provides additional protection against fine dust and pollen. Regularly change the