This comprehensive cleaning kit features a of compatible parts for your DC40 vacuum cleaner (Models: DY-924405-01, DY-923587-02, and DY-922676-01). [HEPA Filter]Made of high-strength environmental-friendly materials, which can block most of dust down to 0.3 micrometer. The filter can maintain the cleaning performance of the , while reducing the penetration of dust, and others into the air you breathe. Replacement Filter: A dirty filter will greatly reduce suction power. Depending on the vacuuming frequency and amount of dirt cleaned, for best performance, change the filter at least every 3 to 6 months. Fine preliminary Filter traps larger particles in the air like dust, hairs, pet fur, lint and more High-efficiency activated carbon filter absorbs household odors from pets, cooking, smoking, wildfire, and harmful VOC's Compatible Models For DC40 DY-924405-01 DY-923587-02 DY-922676-01 Color: blue and gray material: plastic Package Contents: 2 x roller brush 2 x pre-filter 2 x rear filter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.