1/2 Case (25 pkgs) Eureka DCF2 61805-4 HEPA Filter Whirlwind Cyclonic Victory 4600 Upright Vacuum Envirocare Parts designed to fit with or replace genuine original (OEM) manufacture part numbers: 61805, 60285A, 60285B, 60285C 60285D 70855-33n (Be sure to replace the Motor filter - 39345 and the foam pre motor filter - 39348 when you change the dust cup filter.) Designed to fit the vacuum models listed and more: Eureka Upright Bag less Vacuums: Victory Whirlwind 4100, SC4180, 4300-4600, SC4500, 4582, 4640, 4640A, 4640AV-1, 4640AVC, 4641, 4654, 4654AT 4654BT, 4654B-1, 4680, 4680AV, 4680A-3, 4681, 4682, 4683, 4684, 4684A-1, 4685 4686, 4686AV-2, 4687 4688, 4688AV, 4689, 4689AV, 4689AV-1, 4696, 4696A, 4696AV-1, 4789AV, 5180, 5190, and series upright vacuums Dimensions: Bottom: 3 1/4" Top outside: 4" Hole: 2 1/2" diameter Height: 5 5/8" HEPA filtration systems trap and seal-in 100% of dust mites, pollens, ragweed, mold spurs, microscopic particles, bacteria, dust mites, germs as small as 0.1 micron, other allergy causing agents, and 99.9% of pet dander.