General description These replacement dust bags are designed for optimal compatibility with a wide range of i Series vacuum cleaners, including models i1, i1+, i3, i3+, i4, i4+, i5, i5+, i6, i6+, i7, i7+, i8, i8+, j5, j5+, j6, j6+, j7, j7+, j8, j8+, j9, j9+, s9, and s9+. They ensure a seamless fit and effective cleaning performance. Technical specifications Quantity: 12 PCS Material: Non-woven fabric Filtration Performance: Over 99.9% Dust Capacity: 30 bins of dirt and debris Particle Size: Captures particles as small as 0.3 microns Measurement Allowed Error: +/- 1-3 cm Other information Made of 4 layers of high-strength precision fabric, including a 2-layer superfine melt-blown fiber filter layer and 2-layer non-woven fabrics. Features an upgraded self-locking collar design to prevent dust leakage and secondary contamination. Widened 8mm seam design for enhanced durability. Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly