These are the Panasonic ZVac Style U, U3, U6 Upright Vacuum Bags for the Panasonic upright vacuum cleaners. These high filtration, hypoallergenic vacuum bags provide consumers with a significant reduction in the amount of potential airborne particles that can negatively affect the consumer's respiratory system. The Panasonic ZVac Style U, U3, U6 Upright Vacuum Bags replace OEM part number: MC-V160HT The Panasonic ZVac Style U, U3, U6 Upright Vacuum Bags are manufactured to fit the following Panasonic Upright Vacuum Cleaner models: MC-V5017, MC-V5217,MC-V5237, MC-V5247, MC-V5257, MC-5502, MC-6602, MC-V5715, MC-V5720, MC-V7347, MC-V7357, MC-V7367, MC-V7377, MC-V7387, MC-V7395, MC-V7399, MC-V7407 The Panasonic ZVac Style U, U3, U6 Upright Vacuum Bags are composed of most earth friendly material designed to have as little negative impact on the environment as possible. ZVac has planted and will continue to plant a tree in the endangered Atlantic Rainforest of Brazil for every 500 vacuum bags manufactured.