General description vhbw offers a set of 5 HEPA filters designed for Gtech AirRam 2 (AR20), 2 (AR29), 2 K9 (AR21), and 2 K9 (AR30) vacuum cleaners. These filters are engineered to enhance suction capacity by effectively filtering out dust, allergens, and animal hairs, making them particularly suitable for allergy sufferers. With a larger filter surface area compared to standard filters, they ensure cleaner exhaust air by trapping even the smallest particles. Technical specifications Filter class: H11 External diameter: 4.2 cm Internal diameter: 3.2 cm Height: 5.4 cm Material: foam / polyester fleece / synthetic rubber Weight per filter: 21 g Colour: black / green Washable: Yes Compatibility and accessories Compatible with Gtech AirRam 2 (AR20), 2 (AR29), 2 K9 (AR21), 2 K9 (AR30) Replacement for part number: 1611215 Usage It is recommended to replace the filters every 3-6 months or when they no longer clean effectively. The filters can be washed and reused multiple times to maintain