Upgraded litter box filter with increased carbon content and higher filtration efficiency for improved odor absorption and containment. Designed to fit most hooded litter boxes. Made from eco-friendly activated carbon materials that effectively absorb and filter odors over an extended period. Disposable—do not rinse. Each filter is constructed using high-molecular bonding technology to secure premium powdered catalytic activated carbon onto a foaming carrier. The activated carbon fiber filter media, produced with advanced scientific methods, offers high carbon density and superior adsorption performance. Material: Activated carbon fiber. Size: 15.5 x 16.5 cm. Thickness: 1 cm. Weight: Approximately 16 g per piece. Package options: 4-pack or 6-pack of litter box filters. Ideal for regular replacement every 2–3 months.