Uses the highest quality synthetic HEPA filter media. Designed specifically for commercial use, they are always equal to, or exceed OEM quality. Better filtration means cleaner air, less dusting, longer secondary filter life, at considerable savings. Made from the highest-quality materials to achieve filtration efficiencies up to 99.9% Allergen filtration. Designed specifically for commercial use. Maintains suction longer than conventional bags: better suction, less vacuuming. Keeps machines running at peak performance. Removes many indoor allergens, especially in the critical 0.3 to 1 micron range.