![]() 2ģ Who is ASHRAE? The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE), founded in 1894, is an international organization of 51,000 members. *ANSI/ASHRAE Standard 52.1 was discontinued as of January 2009, ANSI/ASHRAE Standard 52.1 ranges are presented here for reference only Please contact us if you have specific questions about air filter options for your applications. K-ASHĢ In recent years, the air filter industry has changed important portions of its long-standing test method, ASHRAE Standard Now, the ASHRAE Standard 52.2, is the only ASHRAE standard used to evaluate filtration product performance. 1 The Updated Air Filter Standard ANSI/ASHRAE Koch Filter Corporation.Durable.
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