Custom Windows Toronto - Custom Sizing & Shapes

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

Ostaco Windows and Doors outstanding reputation is partly based upon our ability to create custom windows of virtually any shape and size. You imagine it, and we can more than likely create it! Bear in mind every window that Ostaco manufactures is custom made to specification. So, feel free to get creative and put us to the test! Coordinate with your designer or architect and customize your new home design or renovation anyway you see fit.

Express Your Unique Style

The fact that Ostaco Windows and Doors is able to offer custom shapes and sizes affords you, the consumer, the ability to tailor your new home design or renovation to your specifications! Customization is not a word you hear too often in the window industry but here at Ostaco we encourage it! The bottom line is we want you to be satisfied when all is said and done. Where is the satisfaction in having your home look generic and cookie cutter? Don’t you want your home to stand out and say “Here I am! Have a look!”? Well this is possible with Ostaco Windows and Doors.

The first step to customization is to contact a dealer near you and set an appointment to determine your window dimensions. From there you can customize your window to your personal taste or to emulate a beautiful home you saw in a design or architectural publication. Whether you want wood or vinyl windows Ostaco Windows and Doors is sure to have the right solution for you!

Available Shapes:

Clip Corner

Extended Triangle

Extended Half Round

Half Segmental

Extended Gothic

Double Corner

Isosceles Triangle

Quarter Round

Extended Half Segmental



Right Angle Triangle

Extended Quarter Round

Full Circle

Extended Elliptical





Half Elliptical


Half Round

Extended Segmental


Extended Half Elliptical

Contact your dealer for max/min limitations.