1. and high quality. 2. Made of excellent materials, durable and practical. 3. The filter can maintain the clean functionality of the vacuum cleaner, while reducing the penetration of dust, pollen and other allergens into the air you breathe. 4. Simple installation, it may be smoothly eliminated and replaced. 5. It is usually recommended to replace it every 2-3 months or in line with your utilization to maintain the mechanical device at its best performance. Compatible with For TY9879 , TY9890, TY9958, TY9990 and For RH9958WO , RH9959WO , RH9878WO , RH9879WO , RH9890WO color:As shown Material:plastic Package Contents: four x vacuum filter Only the above package content, varied products will not be included. Note: Light reflection and diverse reveals could cause the colour of the article in the photo a bit diverse from the genuine thing. The length allowed error is +/- 1-3cm.