Green Klean brand superior quality commercial vacuum bags are specifically designed for the Janitorial Professional vacuum cleaners and are backed by the Green Diamond Warranty. The highest quality 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. 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. OEM# 8502 160.