CASEMENT AND AWNING WINDOWS : GP328 - 5 5/8" (EV550) Performance   Air tightness design pressure A3 (Maximum performance) Water tightness design pressure B7 (Maximum performance) Wind load resistance C5 (Maximum performance) Resistance to forced entry F20 (Maximum performance) Navigation : Windows > Casement and awning windows > Models > GP328 - 5 5/8" (EV550) > Performance All Right Reserved - Roberge & Fils ©2002-2011 - Designed and programmed by Radium inc.