Eureka Genuine Style CMF-1 Filters OEM Part # 61940 Replaces cassette filter 61333 package 60696 and 61940. Victory / Self-Propelled Whirlwind Filter Package 4-Pack 2 motor filters and 2 cassette filters for 4300, 4400 and 5190 Series Bagless Uprights. For optimum performance, change your filters every 6 months.