Keep your M1 Open-Top Self-Cleaning Cat Litter Box running smoothly with these replacement waste bags. Each pack includes 2 rolls, totaling 30 bags, designed specifically for the M1 model. • Compatibility: Designed for M1 Open-Top Self-Cleaning Cat Litter Box • Quantity: 2 rolls (30 bags in total) • Bag Size: 12.9 inches x 27.1 inches (330mm x 690mm) • Usage: Each bag lasts approximately 10-14 days for one cat • Convenience: Easy to replace and dispose of, ensuring a clean and odor-free environment for your cat These waste bags are essential for maintaining the hygiene and efficiency of your self-cleaning litter box. Ensure your cat's litter area stays fresh and clean with 's high-quality replacement waste bags.