Made of high-strength and environmental protection material,Easy to install.The filter screen can keep the cleaning performance of the sweeper and reduce the penetration of dust, pollen and other allergens into the you It is suggested it should be replaced 1 -2months.Care Instructions: 1. Wash the lters regularly using warm, soapy water 2. It is very important the lters are completely dry before (24 hours)For TY9879 , TY9890, TY9958, TY9990 and For RH9958WO , RH9959WO , RH9878WO , RH9879WO , RH9890WOColour:As shownMaterial:plasticPackage Contents:5 x FilterOnly the above package content, other products are not included.Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.