Filter cartridge made of heavy duty fleece material enclosed with wire mesh with high 1.0 micron filtration rate. Wire mesh over filter helps to protect filter. Fits SQ, Aero, Attix, and Turbo models. Measures OD 7", ID 5.5", H 9". Can be cleaned by washing or blowing out. This filter also used on Turbo DT movel vacuum. Note: If you have a Turbo or SQ vacuum or Attix 19 gallon vacuum that was not originally fitted for a heavy duty filter, you will also need to order a filter disk. Please call us for information on this at 800-214-9111.