This is the best quality generic Eureka HEPA filter Style HF-9, part # 60285 on the market. This filter will work with the following Eureka models; Fits Eureka Victory models 4300, 4400 and 4600. Eureka Victory Enviro Vac models 4370, 4377 and 4470. Eureka Self-Propelled models 5184, 5185, 5187, 5188, 5190, 5191, 5195 & 5196. Eureka Whirlwind models 4180, 4380, 4381, 4475, 4480, 4481, 4483, 4485, 4488 4489, 4580, 4680, 4686 & 4689 (does not fit 4800). Eureka Smart Vac models 4469, 4473 & 4476. Sanitaire model S4170, SC4570 and SC4580. This filter will also fit Eureka Boss models; 4672, 4374, 4376, 4380, 4381, 4469, 4470, 4471, 4472, 4473, 4475, 4476, 4478, 4479, 4480, 4481, 4482, 4483, 4484, 4485, 5184, 5185, 5187, 5188, 5190, 5191, 5192, S4170, and Sanitaire models; S4180, SC4570, SC4580. This filter measures 8" x 4" x 1.75". You should replace this filter at least once a year. Homes with severe allergies and breathing issues, such as asthma, should replace this filter every 6 months. The more often you replace this filter, the longer your Eureka vacuum cleaner will last you.