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Glossary

AIR PERMEABLE

An insulation having an air permanence at a specific thickness that is greater than 0.02 L/s•m2 at 75 Pa pressure differential (0.004 ft3/ft2•min at 1.57 lb/ft2) tested in accordance with ASTM E 2178 or E 283.
See also: PERMEABILITY, AIR;  PERMEANCE, AIR 

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