Fenestration Performance Grades with Water Resistance Pressure by Province for Rough Terrain 2014, Member Only Fenestration Performance Grades with Water Resistance Pressure by Province for Rough TerrainSep 16, 2014 Fenestration Performance Grades with Water Resistance Pressure by Province for Rough Terrain – Sept. 2014 – NAFS Performance Histograms Skills Posted on September 16, 2014 ← Building Codes Standards Review – J. Baker – FC September 2014 Webinar Series Voluntary NAFS Labeling Guidelines for Products with Mullions – FC Webinar Slides →