Set includes 12 filters, ideal replacement for old filters Compatible with Roomba ie series ie i1 i3 i4 i6 i7 i8 e5 e6 + J7 robot vacuum cleaners (not suitable for J7+)! ! ! The filter maintains the cleaning performance of the vacuum cleaner and reduces penetration in breathing Replace the accessories regularly to keep your robot vacuum cleaner at its best and maintain a cleaner home environment. All spare parts we sell are replacement products, not original spare parts.