Set includes 12 filters, ideal replacement for old filters Compatible with Roomba i&e i&e Series i1 i3 i4 i6 i7 i8 e5 e6+ Robot Vacuum Cleaner D7 (not available for D7+)! ! ! The filter maintains the cleaning performance of the vacuum cleaner and reduces the infiltration into the air you breathe Replace the accessories regularly to keep your robot vacuum cleaner performing at its best and maintain a long life and cleaner home environment. All parts and spare parts we sell are replacement products and not original spare parts.