Designed to fit: Bissell 8 & 14. (Vacuum model list on back). Fits Bissell Lift Off 3750, 6595, 6801 Series; Lift-Off Revolution 3760, 4220, 6850, 6860, 89Q9 Series; Power Trak Cyclonic 6390 Series; Momentum 3910 Series; Velocity 3950 Series; Total Floors Velocity 3990, 6393 Series. Guarantee: The enclosed vacuum cleaner filter is guaranteed against defects in construction and materials. Should a filter fail under normal home usage, we will send you a replacement at no charge. Return the defective filter along with this guarantee to: Rug Doctor, 415 C Axminister Dr., Fenton, MO 63026. For more information on renting or purchasing Rug Doctor products call 1-800-RUG-DOCTOR (1-800-784-3628) or visit us on the web at: www.rugdoctor.com. Made in China.