Will fit most 5 gal and larger vacuums made after 1988 Fits all vacuums that use the red stripe filter Fits current vacuums 9-17784, 9-17761, 9-17066, 9-17741, 9-17742, 9-17765, and 9-17762 This HEPA ("High-Efficiency Particulate Air") vacuum filter will prevent dust, pet hair, dander, dust mites, and other tiny contaminants from being circulated back into the air when you vacuum, which is particularly helpful for allergy and asthma sufferers.