Green Klean® Replacement vacuum bags use the highest quality filter media including melt-blown inner liner in order to achieve filtration efficiencies up to 99.9%. Designed specifically for commercial use, they are always equal to, or exceed OEM quality. Capacity Range (Volume): 5.1 qt; OEM/Compatible: Compatible; Size Group: 9 x 8 x 3; Style: GK-CV30.