General description The vhbw conical filters are designed for use with ValloFlex GEO LUFT geothermal heat exchangers. These exhaust air filters effectively prevent contamination in the ventilation ducts, ensuring quiet operation of the exhaust air valves. Technical specifications Filter class: G3 Length: 50 cm Width: 29.5 cm Thickness: 1 cm Material: fleece Colour: white Weight: 125 g Binder-free, thermally bonded Compatibility and accessories Compatible with ValloFlex GEO LUFT Replacement for models: 1765, 394302 Installation Fits on all round exhaust air disc valves with mounting ring Valves are secured into the mounting frame using a quarter turn Usage Prevents contamination of ventilation ducts Ensures quiet operation of exhaust air valves