PureAir 604642-01, PCO-20C Air Purifier Maintenance Kit, 21 x 26 x 4 Inch, MERV 16, 6 UV−A Lamps

Lennox X8344 MERV 16 Upgrade Kit without Insert Filter dimensions: 21" x 26" x 4" This X8344 Kit includes: - Merv 16 Filter, X6669 - 6 - UV bulbs, X8149 The X8344 kit needs to be replaced annually. The PureAir Air Purification system uses Photocatalytic Oxidation process for removing today's most common household pollutants. It is far and away the best system for attacking all three classes of contaminants - particles, bioaerosols, and odors/chemicals. The PureAir system removes 75% of particles down to 0.3 micron, 60% of bioaerosols down to 0.3 micron, and it removes odors and destroys 50% of chemicals within a 24-hour period. According to Lennox, the PureAir system "cleans the air in your home better than any other system you can buy."