Time to replace the bags in your Eureka upright vacuum? This is a pack of Type RR replacement bags with micron-level allergy filtration. They're a premium aftermarket fit for a wide range of Eureka 'Boss' and 'Ultra' series models, specifically the 4800 series like the 4870, 4872, 4874, 4875, and others (including Boss SmartVac, Omega, etc.). The bags are made from electrostatically lined paper to trap dust and allergens. Choose from packs of 3, 9, or other quantities. Brand is EnviroCare. Using fresh bags maintains your vacuum's suction and filtration efficiency. If your vacuum is losing power or you see dust escaping, a new bag is the first thing to try. These are much more affordable than buying bags at the big box store. Keep your cleaning routine effective and your home's air cleaner. A must-have consumable for any Eureka vacuum owner. Don't run your vacuum with a clogged, old bag – stock up and change them regularly. Simple maintenance for a cleaner house.