EnviroCare Replacement Vacuum Bags for Royal Tank Type J. 7 Pack and 1 Filter Fits: Dirt Devil, Metal Tanks, Pony Tank Vacuum Cleaners 7 Royal Tank Type J Allergy Vacuum Bags + 1 Filter Fits original manufacture part numbers: 3-040447-001 99.7% of all dust particles are captured with Envirocare bags EnviroCare Premium aftermarket Part # 151