Foam secondary motor filter kit 7 & 8 are designed to fit Bissell 3595 and 3596 model vacuums.  CleanView and Lift-Off: 3595, 3596, 6591, 3575, 3590, 8975, 8990,3760, 4220, 6850, 6860, 3760, 4220, 6850, 6860. you get two packges in this deal