Style U-3 & U-6. Fits most all Panasonic upright vacuums with top-fill bags including all current production models series MCV5000 & MCV7000.Not for older models that require U-1 bags. Sold 3 bags per pack.Micro-Lined Bags capture microscopic particles and germs and bacteria as small as 0.1 microns. Sold 12 packages of 3pk bags (36 bags total).Panasonic models that use U bags: 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