Bissell filter part# 3290 is a secondary filter that fits the following Bissell upright models: 3910H, 6390W, 3910T, 39106, 39103, 82G71, 3950, 39509, 87B4, 3990. All Bissell Momentum, and Velocity models All Bissell Machines Using Style 7/8/14 Pre-Motor Filters.