HiMARK WINDOW & Doors by Okna take great pride in building energy efficient windows and doors that add comfort and beauty to consumers’ homes. Our goal as engineers and designers is to use advanced technology available to manufacture windows and doors that exceed the highest standards.

The sophisticated technological innovations used to make our windows and doors energy efficient set the bar for other manufacturers and contribute to a bigger cause – protecting our environment. We already surpass not only the current requirements for the government’s Energy Star certification but also the requirements set to be implemented in 2012. By conserving energy, our windows and doors can drastically lower consumers’ heating and cooling bills each month.


HiMark 800 Series Brochure – Download
HiMark Bay/Bow Brochure – Download

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