1. COMPATIBILITY – Perfect replacement for vacuum models 50555, 50557, 50558, 50401, 50403 and Type C, C-5, C-18 series, ensuring wide coverage for many popular canister vacuums.|2. HIGH FILTRATION – Multi-layer premium bags trap 99.97% of fine dust, pet hair, dirt and allergens as small as 0.3 microns, improving indoor air quality and keeping your home fresh.|3. DURABLE & LEAKPROOF – Strong tear-resistant paper with sealed seams prevents bag bursting, leakage or dust escape, ensuring clean disposal and long-lasting performance.|4. EASY TO INSTALL – Quick replacement process: remove the used dust bag and insert the new one in seconds, designed for a secure fit with compatible vacuum models.|5. VALUE PACK OPTIONS – Available in 10, 20 and 30 pack variations for household needs, saving money and reducing frequent replacements with convenient storage.