Upgrade your MD central vacuum system with Tru-Seal Microfilter Bag - 3 Pack. This innovative system boasts three connection points for efficient debris intake and features a highly durable HEPA media filter bag that captures debris as small as 0.3 microns. With a large 8-gallon capacity and easy installation, it's the perfect solution for a cleaner home. Adaptor may be required for older units not pre configured with the Tru-Seal system