General description New Replacement Dust Bags for iRobot Roomba Clean Base Automatic Dirt Disposal models, compatible with all I, S, and J series, including i3, i4, i6, i7, j7, i8, S9 series. These bags feature a 4-layer filtration system designed to prevent dust leakage, ensuring your Clean Base remains clean. Technical specifications Filtration System: 4-layer (2-layer ultrafine melt-blown fibers and 2-layer non-woven fabrics) Capacity: Each bag holds up to 30 bins of dirt and debris Material: Non-woven fabric Measurement allowed error: +/- 1-3 cm Compatibility and accessories Compatible with: i3 (3150), i3+ (3350), i4, i4+ (4552), i6 (6150), i6+ (6550), i7 (7150), i7+ (7550), j7, j7+ (7550), i8 (8150), i8+ (8550), S9 (9150), S9+ (9550, 955020) Package Contents: 12 x Dust Bags Installation Easy to replace: Slide the new bag into the cartridge using the plastic card in the guide rails Ensure the bag is securely fixed in your Clean Base Usage Designed to effectively prevent dust from