These genuine Numatic Hepaflow dustbags fit a variety of Numatic vacuum cleaners. NVM-1CH 3 Layer Hepaflo Filter Dust Bags are sold in a pack of 10 and are suitable for models such as Henry, Hetty, James, and NRV200 Hepaflow dustbags are up to 14 times more efficient than paper bags in retaining fine dust within the bag, making them great for allergy sufferers. Models these Hepaflow vacuum bags fits are: Numatic vacuum models HZ 250, HZ 250-2 Small, AVQ250, AVQ250, HZ 200, AVQ380, Henry HVR200, Hetty HET200 , Harry HHR200, Henry Xtra HVX200, James JVP180, Henry Micro HVR200M, NQS250, NQS250B, NVQ200, RSV130, RSAV130, Henry Compact HVR160, Hetty Compact HET160 and the Henry Professional HVR240.