All the style and elegance of vintage sash windows, with all the advantages of today’s high security and thermal efficiency. Vertical Sliding Sash windows are hugely popular throughout the world today for their distinguished look as well as their proven reputation. The modern version of these windows are energy efficient throughout the year and can allow ample fresh air into the house with their upward opening mechanism .
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Three panes of glass separated by argon gas means it has an extra layer of glass to insulate your home over double glazing. This extra layer makes it more difficult for heat to escape allowing you to maintain the temperature in your home.