General description vhbw offers a set of 4 HEPA filters designed specifically for the Firefix 963 Ash Vac. These filters are essential for maintaining optimum suction capacity by effectively filtering out the smallest particles from the vacuum cleaner's exhaust air. With a larger surface area than standard filters, they provide enhanced protection against dust, making them ideal for allergy sufferers. The filters can be washed and reused multiple times, ensuring longevity and efficiency. Technical specifications External diameter: 16.1 cm Internal diameter: 11.4 cm Height: 8.8 cm Material: rubber / microfleece Weight per filter: 164 g Form: round Colour: black / white Washable Compatibility and accessories Compatible with Firefix 963 Replacement for: 760023, 7906401704, 8190.98, 400563 Installation Always ensure that the ash has cooled down to a temperature below 40 degrees before starting to vacuum. Usage It is recommended to replace the filters every 3-6 months or when they no