Great Value: The set contains 3 pre-filters, 3 post-filters, and a cleaning brush, your one-year use will be satisfied, just make your expensive for Dyson always maintain the best working condition. A Must-Have: Increased use of for Dyson vacuums may cause suction power to decrease or stop the machine working. Generally speaking, this is mainly because the filter of the vacuum cleaner becomes dirty, which affects the working efficiency of the vacuum cleaner. In this case, changing the filter is a very smart choice. Highly Efficient Filtering: The premium pre-filters and post-filters can effectively filter dust, etc., prevent large particles of dust from entering the motor, ensure a long life for Dyson vacuum cleaner.. It?s recommended to replace the filter once every 2-3 months, or dependent on usage. Perfect Fit: Easy to inatall, fit for Dyson V8+, V8 Absolute, V8 Animal, V8 Carbon Fiber, V7 Absolute, V7 Animal Pro, V7 Animal Plus, V7 Motorhead, V7 Car + Boat, V7 Trigger Vacuum Cleaner. Notes: Not for V6 vacuums, please confirm your accessories model and size before buying. Product Specifications: Quantity: 1 Set(7Pcs) Part Model: Pre-Filter 965661-01 and Post-Filter 967478-01 Pre-Filter Size: about 170 x 48 x25mm/6.7 x 1.9 x 1.0in Post-Filter Size: about 87 x 75 x 44mm/3.4 x 3.0 x 1.7in Notes: Please allow a slight dimension difference due to different manual measurements. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Package Included: 3 x Pre-Filters for Dyson 3 x Post-Filters for Dyson 1 x Cleaning Brush