Exceed filters are manufactured and marketed by a new division of eSpin Technologies Inc., a nanotechnology firm established in 1999 in Chattanooga, Tennessee. eSpin, a leader in implementing nanofiber technology, has leveraged early involvement in several prestigious federally funded projects to achieve its primary vision of mainstreaming nanofiber-based technology into daily life. Since their introduction in 2008, exceed filters have been eagerly received by customers for their ability to greatly reduce small particulate counts in the 0.3 to 0.5 micrometer range, the size of bacteria, most smoke, droplet nuclei (from sneezes), airborne cooking oil, and copy toner. Exceed filters are available in a range of sizes with efficiency levels of MERV 11 to MERV 14. One-inch filters for residential use are available in MERV 11 and MERV 13. Two-inch MERV 13 filters with activated carbon provide submicron particulate removal while helping control odors. Additional filter sizes with efficiencies up to MERV 15 are under development.