EnviroCare Replacement Vacuum Bags for Modern Day 8 Gallon Central Vacuums 6 Pack 6 MicroFine Electrostatic lined Allergen Vacuum Bags made by EnviroCare Part #MD814 Model: MD (Modern Day)Flomaster, Silent Master, AirFlo, Brute, PowerKing (Pow-R-King), Sequioa, Star, StorVac, Action, & Thoromatic Fits #: ModernDay A, B, B2, J, K, and SR, Flo-Master M19, M31, M32, M34, M45, M64, M72, M85, and M92, open bag units under 34 inches in total length Fit with or replace genuine original (OEM): 720H-5, Replaces older #720-5 This bag fits over the blue cloth support. The bag was designed to be big so there would be more area to filter the air. After inserting the bag, open it up inside the vacuum by pushing down and out from the sides. Dimensions: 18 1/2" x 14" Bag Size with an elastic band on the top Bag Diameter stretches to approximately 24"