for Simplicity Vacuum Bags: Compatible with for Simplicity Upright Models,S20EZM,S20E,S20ENT; 5000 Series including 4800,5200,5300; 6000 Series including 6100,6370,6400,6550,6570; 6 Series including 6600,6670,6900,6970; Commercial Series including 5500,6870; #S6-3,S6-12,C13-6,C13H-6,52-2402-07 for Riccar Vacuum Bags Type A: compatible with for riccar models,fit R100,R200,R300,R300C,R500,R600,R700,R800,R800C; 2000 Series including N2000,N2100,N2150,N2200,N2200; 4000 Series including 4950,4900,4812,4810,4512; Vibrance including VIBCL,VIBS,VIBD, VIBP & VIBC,B503-3500 Filtration System: Adopts 5-filtration layers,two non-woven cloth layers,TwoMelt-blown cloth layers, One Hot-air-Hepa-cotton layer, Effectively blocking 99% of dust particles as small as 0.25 um.Rubber gasket to help seal in the dust;Duty cardboard collar to help the bag fits tightly into the machine Just dumping the dust and particles inside the bags when gets 2/3 fulled. No need to rewashing your vacs. Simplicity vacuum