CSA has become the international standard of quality and when you are looking at a significant investment like windows, it is an important symbol to watch for. The operational performance ratings for certified products are based on CSA International's A440-00 Window Standards that measure water, air, wind tightness and other important operating factors.
CSA Ratings Scale Overview
For more information visit CSA International’s website at www.csa-international.org
Durabuilt CSA NAFS Product Ratings
* CSA comment for both 920 and 960 series windows: “Operable specimen meets fixed level’s air leakage rate of less than 0.25 (m3/hr) m-1.”
The above performance data is a guideline only and subject to change. Visit http://oee.nrcan.gc.ca for the most up-to-date performance information.