Built In Central Vacuums, AirMaster, FloMaster, ModernDay and SilentMaster. Certain Specialty Residential and Commercial Vacuums such as the Cirrus Evolution, Lindhaus, Riccar, SEBO and Titan Vacuums!
Panasonic Vacuum Bags U-3 MC-115PT 12 Pack No longer available the U12 is the only good replacement
Panasonic Vacuum Bags U-3 MC-115PT 12 Pack. U3, U6, U10 all have same fitting. The difference is the lining quality or synthetics of the bags.