Hepa Filter for Eureka DCF-21 Vacuum Part # 67821， 68931， 68931A， EF91， EF-91， EF-91B Washable 2pcs(2)<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Allergen filter replaces Eureka DCF-21 Part # 67821， 68931， 68931A， EF91， EF-91， EF-91B.</li><li>Also fits Eureka 4236AZ Comfort Clean Upright.4235AZ， 4236AZ， 460AZ， SA3276AZ， UK4236AZ， UK4237AZ， 3276AVZ， 3276AZ， 3277AVZ， 3279AZ， AirSpeed AS1000A</li><li>Capture 99.97% of dust and particles as small as 3 microns</li><li>Washable &amp; Reusable</li><li>Please replace it every 6 months</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41trdRbUH7L.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/419IUH4SzOL.jpg" noproxy>