Each one of these HEPA H13 grade filter fits the discontinued Koblenz D-280 HEPA construction vacuum. When used in conjunction with the Koblenz D-280 dry vac bags, you'll actually extend the life of the HEPA filter. Each filter captures 99.97% of all particles down to 0.3 microns. It can be blown out to clean it, but if any tears or holes appear in the HEPA filter, it should be changed out immediately. If it is not changed out and there is an imperfection or tear, it will no longer meet the OSHA & EPA recovery compliance programs for recovery. For best results, you should change this filter every 6 months or more frequently with heavy usage.

Take a look at our full line of vac filters for more Koblenz and other brand vac air filtration.