Energy Star Qualifications

Width of the overall glass unit is 1 3/8" top rating in energy efficiency.

Ostaco is proud to be an Energy Star certified manufacturer.  Our research and development teams will continue their focus on creating more and more energy star windows and doors, Toronto.   Please visit the energy star website to see all of the ratings on Ostaco products. 

Check the Energy Star website to see if they are listed: Energy Star Canada

Ostaco Windows and Doors Energy Star Qualifications - 1