manufacturers of windows
Toll Free  888-738-0738
Concord  905-738-1870
Every style of vinyl window that FM manufactures is engineered to accept double pane sealed glass units with optimum air spaces (the amount of space between the 2 panes of glass) for the highest possible energy efficiency.

Duraseal™ Technology
We produce our own double pane sealed glass units using Duraseal warm edge spacer technology. These materials reduce condensation on the glass and heat and cold transfer around the glass perimeter and can be combined with low emissivity (Low E) coatings, argon gas fillings and a large variety of internal and external grill options.

Duraseal™ is an insulating glass spacer system that takes insulating glass performance to the next level, setting a new standard for energy efficiency by:

  • improving resistance to condensation
  • reducing conductivity and u-value
  • providing a continuous moisture vapour barrier
  • ensuring superior argon gas retention
  • meeting EnergySTAR® requirements
Our glazing techniques and Hydraglass 50 manufacturing process are second to none and are the reason we can confidently offer a hassle-free lifetime warranty on our sealed glass units. You'll get a clear view of the future with FM vinyl windows.