ASTM E 779-19
{State} required standard test method for determining air leakage rate by fan pressurization (ie. Washington State Energy Code, Oregon: ASHRAE 90.1 and/or 2019 Oregon Zero Energy Ready Commercial Code, etc)
{State} required standard test method for determining air leakage rate by fan pressurization (ie. Washington State Energy Code, Oregon: ASHRAE 90.1 and/or 2019 Oregon Zero Energy Ready Commercial Code, etc)