Designed specifically for commercial use. Premium filter that meets or exceed OEM filter efficiency. Each filter bag is printed to easily identify the vacuum it fits. Proper filtration is vital when cleaning to prevent allergen and harmful particulates from being released back into the air. Janitized™ Vacuum Filter Bags provide indoor air quality, worker safety and facility clean air management. For Windsor™. OEM/Compatible: Compatible; For Use With: Windsor™ Sensor XP/S Micro Filter; OEM #5301ER; Style: S; SP; Vacuum Type: Upright.