Suitable for: Hoover Concept One, Concept Two, Convertible (Top Fill), Elite, Encore, Futura, Soft & Light, Legacy, Preferred, PowerMax, Supremacy, Runabout, Spectrum, Spirit, Tempo, Decade 800, Decade 80, RS, Constellation, TurboPower 1500, 2000, 2200, 3000, 3200, 4000, 4200, Innovation models including C1631, C1632, C1800, C1800020, C1805, C1810, C1810020, C1815, CH50015, CH50020