Why NTWindow is staying up to date on industry standards.
 

Energy Star® Windows is a partnership/program between the U.S. Department of Energy and manufacturers of windows, doors and skylights designed to help consumers identify energy efficient products. For more information click on the logo or go to www.energystar.gov.

 
  The National Fenestration Rating Council (NFRC) administers a voluntary window rating/labeling program to produce window ratings that can be directly compared due to identical evaluation procedures. For more information click on the logo, or go to www.nfrc.org.
 
American Architectural Manufacturers Association  (AAMA)  is the source of performance standards, product certification and educational programs for the window, door and skylight industry. www.aamanet.org

The Efficient Windows Collaborative (EWC) is a coalition of window, door, skylight, component manufacturers, research organizations, federal, state and local agencies, and others interested in expanding the market for high-efficiency fenestration products. For more information click on the logo, or go to www.efficientwindows.org.