This item is no longer in production. The HHB20530, made by AAF Flanders, is the recommended replacement.
Link to replacement: https://www.rememberthefilter.com/products/20-x-30-x-1-2-hog-hair-roll-hhb20530
Permaire™ Service Rolls. Permaire™ is a unique type of air filtration media that has evolved from a natural organic fiber media to a new completely synthetic, self-supporting and completely washable media. It has all the benefits of organic media but has a longer service life, better structural integrity as well as being completely odor free. Flanders hammock rolls are available in nominal 1" spun glass, 2" spun glass, and 1" polyester synthetic fiber media. Performance data on all Flanders hammock media is available upon request.
Size: 20" X 30' X 1/2"