ash vacuum cleaner collect dust. ash, glass cullet, bits of metal, etc power ash cleaner, used for firepleace,oven, ash vacuum cleanerA. Technical SpecificationSET ASH ... of the model vacuum cleaner: This machine designs as one of high quality cleaner, especially for cleaning special place, coal ashes, dust stack,stove ... double-barrel make the HEPA not be blocked by the dust, and easy to maintain.