Panasonic U U-3 U-6 Vacuum Bags Fits Upright Models MC-/MC51**, 52**, 53**, 55**, 62**, 63**, 66**, 67**, 68**, and 69**, ** denotes digits 00 to 99 Replaces Panasonic Part# MC115PT, MC-115PT for Panasonic MC or MCV series vacuum cleaner TRAPS 99.7% DOWN TO 5.0 MICRONS IDEAL FOR ALLERGY SUFFERES. GUARANTEED AGAINS DEFECTS Change bag every 30 to 60 days for optimum performance