About this product Replaceable, disposable pre-motor filter. Compatible with DC37, DC39, DC28, and DC53 models. Washable and reusable pre-motor filter. Replacement pre-filter #923413-01. The DC28 vacuum's pre-filter removes dust, pollen, pet dander, and other everyday debris. Replacing your unit's air filter will help create a clean, healthy environment for your family. Washable and reusable dust filters. It is recommended to clean them once a month. They can be reused after drying. Make sure they are completely dry before use. No need to buy new products; save money. Easy to install, this high-quality and economical vacuum cleaner filter kit captures most of the dust and helps keep your home cleaner. It is recommended to replace the filter every 2 to 4 months to ensure optimal performance and extend its life. Contents: 2 pre-motor filters. Product information: Material: HEPA Reusability: Reusable Quantity: 2