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ASHRAE 138   2021   Method of Testing for Rating Ceiling Panels for Sensible Heating and Cooling 30 $
ASHRAE 138   2016   Method of Testing for Rating Ceiling Panels for Sensible Heating and Cooling 30 $
ASHRAE 138   2013   Method of Testing for Rating Ceiling Panels for Sensible Heating and Cooling 30 $
ASHRAE 138   2009   Method of Testing for Rating Ceiling Panels for Sensible Heating and Cooling 20 $