Royal / Dirt Devil Ultra MVP, Magnum MVP, and Swivel Glide Type U Replacement Vacuum Cleaner Bags (OEM# 3920048001) 3 bags/pack 25 Packs/Case, GKH-DDU GKH-DDU Green Klean® MicroPlus® Replacement vacuum bags with a 3 ply Allergy Shield traps particles and allergens with 99% allergen filtration. Bags made from 100% biodegradable material. Designed specifically for Home and Office use, they are always equal to, or exceed OEM quality. Better filtration means cleaner air, less dusting, and longer secondary filter life. Clean with Confidence…Clean with Green Klean.