【Compatible with】--Compatible with your Govee Purifier H7123 and Homvana Purifier H211/H211S. 【Value Pack】--Package includes 2 filters and 4 Pre-filters to efficiently enhance purification performance. 【Easy to install】--Easy to replace and disposable, no tools required. Simply remove and replace from your machine unit when needed. 【Life Time】--Recommend to replace the filter every 4-6 months or depending on usage. 【Buy With Confidence】--If you have any concerns, you can contact us and we will provide services to your satisfaction. 2gv