This is the Eureka HEPA Filter Replacement DCF-4 DCF-18 for the dust cup of the Eureka Upright vacuum cleaners. The Felji Eureka DCF 4 / DCF 18 HEPA Filters are designed to perfectly fit within the following Eureka upright vacuum models: 4700 5500 and HP5550. Replaces OEM part numbers: 63073 62132 63073A and 63073B. A great choice for pet owners or consumers with allergies the Felji Eureka DCF 4 / DCF 18 HEPA Filter captures 99.97% of allergens pet dander and other particulates preventing these potential airborne particles from recirculating into the home. FELJI recommends for consumers to constantly shake the Felji Eureka DCF 4 / DCF 18 HEPA Filter out after a few cleanings and replacing it after 5 to 7 months of usage. This will promote the best filtration reduce motor strain and provide a more well-rounded cleaning experience for your home.