Flo-Master C650 Filter Bag.
Also the replacement bag for AstroVac, Beam (167, 3067, BU165, V165 models, and 110025 and 110056 bags), Broan, Cyclovac, Centra-Clean Home Environmental System, Dynavac, Easyflo, Eureka, Filteraire, Frigidaire, Galaxie, Heatilator units (except model 4000), Housekeeper by Rittenhouse, Husky, Miami Carey, Nutone (391, 391C, and 44186 bags for CV350, CV352, CV353, CV400, CV450, CV450W, CV653, CV750 and CV850), Power Star, Singer, Smart, Soluvac, Star, Vacuflo 200 (bag 6528), Filter-Aire #90610, and others.
The replacement filter bag is around 26" tall by 8" wide holding up to 5 gallons and replaces bags within a several inches of either measurement. The insertion hole connects to intake pipe adapters between 1-1/2" to 2-3/4" in diameter. One Package contains three individual bags.