Hoover Windtunnel Secondary Filter 2 PK # AH41001, 245,38765019 Hoover Windtunnel Secondary Filter 2 PK 2 Filter. Fits With Hoover Models : Hoover U6485900, U6485900PC, C1703900, U64019RM, UH50000, U5140900, U5468900, U5470900, U6434900, U6439900, C1712900, U5402900, U5458910, U5458900, U5467900, U5481980, U6454900, C1705900, C1702900, U5472900, U5473900, U5491900, UH50005B, U5491950, UH30015, CH50010, UH30070, U6485100, U6485200B, U6485300B, U5460900, U5462900, UH30085, EH51000. Manufacturer Part # AH41001,245,38765019