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

Windows Highest quality doors and windows in Toronto are available at Ostaco Windows & Doors. #1 window companies, Toronto window manufacturers Ostaco offer t... http://www.ostaco.com/website/Windows/Window-Style-Comparison.html
Window Type Comparison #1 Toronto Vinyl Windows - Ostaco's finest Toronto window manufacturers assist in decorating your home and enriching the look of your windows with our... http://www.ostaco.com/vinyl-windows-Toronto
Casement & Awning Styles Ostaco Window and Door Manufacturer: Superior windows, manufactured for all your renovation & new contstruction needs.... http://www.ostaco.com/website/Windows/Casement-+and+-Awning-Styles/Comparison-.html
Comparison Casement and Awning Windows - Toronto windows and doors supplier, Ostaco provides superior quality casement windows and more. For details on casement ... http://www.ostaco.com/website/Windows/Casement-+and+-Awning-Styles/Comparison-.html
Core WOOD Wood Windows - Toronto experts, Ostaco, provides modern and highly efficient windows and doors by the leading manufacturers in Toronto. Wood windows a... http://www.ostaco.com/website/Windows/Casement-+and+-Awning-Styles/Core-WOOD.html
Simulated Divided Lite Enhance the old world look with our aluminum windows Toronto simulated divided lite ... http://www.ostaco.com/website/Windows/Finishing-Options/Simulated-Divided-Lite.html
Replacement windows Replacement Windows - Toronto experts, Ostaco is there when you are thinking it's time to replace or vamp up the look of your windows and doors. For m... http://www.ostaco.com/website/Windows/Replacements-+and+-Renovations/Replacement-windows.html
Installation Instructions Window installation - Toronto providers, Ostaco Windows & Doors offers expert installation, window and door selections backed by unbeatable services t... http://www.ostaco.com/window-installation-toronto
Aluminum Windows Aluminum Windows – Toronto manufactures, Ostaco experts help to enhance the timely and classic “old world” look with our custom aluminum windows. For ... http://www.ostaco.com/aluminum-windows-toronto
Custom Sizing & Shapes Custom Windows - Toronto professionals, Ostaco manufactures specialize in custom windows for your home and custom decor. You draw it, we can build it... http://www.ostaco.com/website/Windows/Custom-Sizing-+and+-Shapes.html
Energy Star Qualifications Always choose energy star windows and doors, Toronto - Ostaco.com is synonymous with doors and windows that are energy efficient... http://www.ostaco.com/website/Quality/Energy-Star-Qualifications.html
Ostaco Windows and Doors Reviews We stand by our products and our dealers happy customers are testament to this. We have added some of the review we receive below to provide you with ... http://www.ostaco.com/website/Quality/Ostaco-Windows-and-Doors-Reviews.html