1.GREAT VALUE: This is a kit of replacements for BR150/BR151 robot vacuum cleaner, to help effectively filter airborne particles for ier living. Replace the accessories parts timely so that the cleaning effect of your vacuum is the same as that of the original one, and keeping the cleanness and of your home. 2.COMPATIBILITY: Compatible with MAMNV BR150/BR151, for ZCWA BR150/BR151, for ONSON BR150/BR151, for MANVINS G20 robot sweeper. Please note that this is a replacement product, not an OEM product. Make sure this fits by entering your model number. 3.GREAT AIR QUALITY: Nice accessories to upgrade the performance of your robot vacuum cleaner. Effectively help to remove more dirt, dust and debris, and provide y and clean living environment for you and your families. 4.SIMPLE TO INSTALL: Simply remove and replace from your vacuum cleaner unit when needed. For maximum efficiency, it is recommended to replace the filter every 3-6 months (dependent on air quality and use).