AHRI 681 (SI/2017): Performance Rating of Residential Air Filter Equipment
Standard Scope
This standard applies to factory-made air filter equipment and air filter media, as used in such equipment, for removing particulate matter when used for the environmental conditioning of inhabited spaces in residential facilities. The standard evaluates the “combined” performance of air filter equipment in all aspects: initial resistance, final resistance, particle size efficiency, and dust holding capacity, which offers the user and specifier a complete view of the air filter equipment for comparison purposes.
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