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A ceiling tile that actively converts man-made formaldehyde and other aldehyes into an inert substance permanently captured in a ceiling, Ultima with AirGuard Coating from Armstrong is designed to improve indoor air quality. Applied to the back of acoustical ceiling tiles, AirGuard removes aldehydes for up to 10 years, and more than 90% of formaldehyde during its first year of use. The coating is UL-Environment certified. Ultima ceilings’ performance characteristics are unaffected by the AirGuard Coating. armstrong.com