H-P Disposable Filter Bag power units take central vacuum cleaning to the next level by ensuring you never have to touch the dirt, even when the vacuum is full! H-P Disposable Filter Bag units feature durable, triple-layer filter bags that do not let any dust escape. Since the outside of the CleanShield™ bag is never exposed to dirt, neither are you. Simply remove, seal and replace the bag ensuring the cleanest experience possible. Bag filters particles as small as .3 microns.