Genuine Vacmaster, fine filtration replacement dust bags for 20L vacuum cleaners. For dry use only. Fine filtration dust bags are designed to collect finer dust. Constructed with a dual layer, fine filtration dust bags offer a higher level of protection from dust emissions. Use a dust bag for a more hygienic and convenient disposal method. These dust bags are a universal fit and are compatible with wet & dry cleaners made by Karcher, Ryobi, Nilfisk, Einhell, Guild and Ozito. They are not compatible with Numatic wet & dry vacuum cleaners.