FilterBuy Hoover WindTunnel Air Model UH70400 HEPA Vacuum Filter. Designed to Replace Hoover Part # 303902001. 1 Allergen Hepa Vacuum Filter Premium Allergen Filters Designed by FilterBuy to fit Hoover WindTunnel Air Model UH70400. Also compatible with the following Hoover models: UH70400BCA, UH70400CA, UH70400FDI, UH70400PC, UH70400PDI, and UH72405. Replaces Hoover Part # 303902001. Vacuum FilterBuy: Breathe Better!