Compatibility: This filter is compatible with Bosch vacuum cleaner Unlimited Gen2 Series 8 (BSS825CARP) (not for Series 6). Compatible number: 12023349. Suitable for models: BBS1, BBS8, BCS1, BCS8, BKS8. Please confirm your vacuum cleaner model before purchase Focus on Fine Cleaning: This replacement filter is specially designed for large spaces such as living rooms, offices, factories, kitchens, etc. Good HEPA filtration can improve the efficiency of the vacuum cleaner, expand the absorption range, and help absorb pet hair, accumulated oil, fibers, pollen, flying dust, and tiny particles Good Air Circulation: The replacement filter is a true HEPA filter, which can precisely filter particles up to 0.3 microns in size and has a filter performance of up to 99.97%. It also helps keep dust out while ensuring a better air circulation system. Noise reduction of at least 20 dB Easy to Use: Just turn the knob in the middle and replace the filter. Use it while keeping it dry. Wait for it to dry and it will recover again. Super convenient to replace the filter Cost Saving: The package includes 2 HEPA filters made of high-quality materials. It is recommended to replace the filter every 3 months (depending on the amount of dirt absorbed). Warm Tips: If the humidity is high, let the filter air dry for a long time before putting it back into the vacuum cleaner Material: Plastic Color: As shown Package Contents: 2 x Filter 1 x Cleaning Brush