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1 ASHRAE Standard 62-1989, Ventilation Standard for Acceptable Indoor Air Quality, Page 9, 6.1.2
2 25-30% and 30-35% ASHRAE dust spot designators actually relate MERV 6/7 performance when considered under ASHRAE Standard 52.2 (cotton/polyester blend pleated filters) Actual Handbook quotations require updating per revised references and Standards.
3 "Long Term Characteristics of HVAC Filters in a Real Environment", Dr. Stein Hanssen, Norwegian University of Science & Technology, Presented at Indoor Air '96'.
4 ASHRAE Standard 62-1989, Ventilation Standard for Acceptable Indoor Air Quality, Page 7, 6
5 ASHRAE Standard 62-1989, Ventilation Standard for Acceptable Indoor Air Quality, Page 10,Table 2.2
6 1995 ASHRAE Applications Handbook, Page 4.2
7 ASHRAE Standard 62-1989, Ventilation Standard for Acceptable Indoor Air Quality, Page 10,Table 2.2
8 1995 ASHRAE Applications Handbook, Page 4.4
9 1995 ASHRAE Applications Handbook, Page 4.7
10 1995 ASHRAE Applications Handbook, Page 4.7
11 1995 ASHRAE Applications Handbook, Page 4.7
12 ASHRAE Standard 62-1989, Ventilation Standard for Acceptable Indoor Air Quality, Page 10
13 1995 ASHRAE Applications Handbook, Page 13.8
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