Bissell Stick Vac Primary Filter Part # 2037423 Bissell 38B1 Stick Vacuum Cleaner Primary Filter Single. Fits Models : 38B16, 38B17, 38B18, 38B1G, 38B1J, 38B1K, 38B1L, 38B1P, 38B1Q, 38B1T, 38B1U, 38B1V, 38B1W, 38B1X, 38B1Z, 38B1, 1059, 10591, 10592, 10594, 38B11, 38B12, 38B13, 38B15. Genuine Part # 2037423, 203-7423.