[HIGH PERFORMANCE]: High efficiency filter replacements help attaching of dust, dirty, pet hair, and small particles microns. To keep your Robot Vacuum running at performance, it's recommended to clean the filter replacements every few weeks and replace every two months. [PREMIUM QUALITY]: Our filter replacements is made with Plastic, use high-strength and environmentally friendly materials to best performance. The edge of the filter is perfectly bonded to the plastic frame. Effectively help to extends the life of your robot vacuum. [EASY TO INSTALL]: This filter replacements are very easy to be replaced and installed on your vacuums. no tools required. Simply remove and replace i7 replacement filters from your machine when needed. Just cost you few minutes, saving you more time and energy. [VALUABLE PACKAGE]: highly cost effective filter for Vacuum. FILTER FOR E I SERIES: Our high efficiency replacement parts are for vacuum cleaner I, E and J series: i7 i7+ i3 i3+ i4 i4+ i6 i6+ i8