Dyson Replacement Filter for DC28 DC33 DC37 DC39 DC41 DC53 CanistersDyson Replacement Filter for DC28 DC33 DC37 DC39 DC41 DC53 Canisters This pre filter is compatible with multiple Dyson models including DC28, DC28c, DC33, DC33c, DC37, DC37c, DC39, DC39c, DC41, and DC53. Its primary function is to capture large debris before the air is filtered through the main filter. To maintain optimal performance, we recommend replacing the pre filter every 3 6 months or as needed based on usage. This will ensure your machine