Blocked filters will reduce the suction in your vacuum cleaner. Cleaning and replacing your filters regularly will help to maintain its best performance. The exhaust filter is the final filter that the air passes through before leaving the vacuum cleaner. This filter fits the following cleaners: ACCELERATOR ZAC6707, ZAC6805-6827, AIRMAX ZAM6100, ZAM6101, ZAM6210-6271, BOLIDO Z4500-4595, CLARIO Z1915, Z1925, Z1935, Z1943, Z1948, Z1955, Z2010-2095, CYCLONEXL ZCX6200, ZCX6201, ERGOSPACE 2253XXL, 2254XXL, XXL21, XXL23, XXL34/B/R, XXL53, XXL61, XXL72, ZE2200-2299, EXCELLIO Z5000-5295, OXYGEN Z5505, Z5510, Z5515, Z5520, Z5525, Z5528, Z5529, Z5530, Z5535, Z5540, Z5542, Z5550-5561, Z5610, Z5623-5626, Z5628, Z5631, Z5635-5660, PRAXIO Z6020, Z6030, Z6040, SMARTVAC Z5000-5695, SUPERPRO Z6160, TWIN CLEAN Z8210, Z8211, Z8220, Z8222, Z8223, Z8230, Z8232, Z8234, Z8240, Z8241, ULTRA SILENCER Z3300-3322, Z3324-3327, Z3329-3335, VIVA CONTROL ZV1010, VIVA QUICKSTOP ZVQ2100-2105. We recommend that filters should be replaced at least twice a year or when they become visibly soiled. Reference: EF17