Style F114, Part AD40114, Vacuums Filter Compatible with Dirt Devil Power Express Lite Stick Vacuum Models: SD22020 SD22030 SD22020B Series Vacuum Filters (4 Pack), It is recommended to clean the filter every 6-9 months for optimum performance，The vacuum cleaner filter can be washed and reused. Easy installation: You can easily replace your old filter by attaching the new one securely onto the vacuum cleaner’s frame. This filter is built to last, providing a reliable option for your Upright vacuum cleaner for a long time. If you are not sure if this is the right model for you, please let me know your model number. Vacuum Filter Compatible with Dirt Devil SD22020 SD22030 SD22020B Power Express Lite Vacuum Cleaner.