What You Should Know About Standard Window Sizes

What You Should Know About Standard Window Sizes

Standard Window Profiles in Canada

It is important to know the standard window sizes that are available when preparing to install new windows. There are various options to consider when deciding which type and size of windows to choose for your installation. The construction of your home can affect the decision, as well.

Dimensions (In)

Low Profile Glazing Dimension (1.5in frame) High Profile Glazing Dimension (3in frame) Surface Area Low vs. High (In2) Percentage Difference

24 x 12

21 x 91/8

181/16 x 61/16

191.63 vs. 111.76


24 x 24

21 x 211/8 181/16 x 181/16 443.63 vs. 328.51 35%

24 x 48

21 x 451/8

181/16 x 421/16

947.63 vs. 762.01


48 x 48 45 x 451/8 421/16 x 421/16 2030.63 vs. 1774.51


72 x 48 69 x 451/8 661/16 x 421/16 3113.63 vs. 2787.01 12%

Minimum and Maximum Window Sizes in Canada

There are several window sizes that are common in Canada. The widths range from 36 inches to a maximum of 78 inches. The heights vary as well from a minimum of 48 inches all the way to a whopping 80 inches. The standards for these window sizes are also in correspondence with a specific square footage allowance. These are only standard sizes; it is possible to have a window custom-made to accommodate special designs and architecture.

The best vinyl windows Toronto offers are also considered “green” products due to their energy star rating. They can improve the overall value of your home as well, which is a bonus to acquiring them for your home. They come in a vast assortment of styles and colors to go along with your personal décor and the overall design of your home.

Style has become very popular in today’s society. That concept has evolved from simply buying nice clothes and cars to assuring that our homes are stylish and chic. Even though it seems like small details, standard window sizes can also play a large role in guaranteeing that our homes are aesthetically attractive. A poorly sized or poorly designed window can take away from the appearance of our home, reducing its value and curb appeal.

Minimum and Maximum Legal Window Sizes in Canada

Even though most manufacturers have their own variation of a product, they must fall under certain requirements – standard window sizes in Canada. There are different factors that will affect the windows you select, depending on where you are installing the windows in your home. Below we list three main factors that can determine your window installation.


This is the trim around your windows. It can have intricate designs to make your home appear more stylish.


This is a functional and visible piece of the window that closes the gap between the window frame and the wall. It is the part that assists in making an airtight seal for energy efficiency.

Jamb Extensions

This will depend upon the basic construction of your home. If you have walls that are studded with 2 by 4’, then they require a smaller jamb extension than that of a home with 2 by 6’

Legal window sizes must be considered, as well. There are certain requirements that you must remain within. For example, double awning windows must be a maximum of 40 inches wide by 60 inches high. For triple awning windows, they must be a maximum of 50 by 50. Double and triple slider windows can be no wider than 78 inches and no higher than 24 inches. Single-hung double pane windows must be a maximum of 49 inches wide by 80 inches high while single hung triple pane windows can be up to 45 inches wide by 78 inches high. Moving on to double hung double pane windows, they can be no wider than 49 inches, and no higher than 78 inches but the double-hung triple pane windows can be up to 48 inches wide by 68 inches tall. Finally, concerning casement windows, the double-pane version can only be a max of 38 inches wide by 78 inches tall. And the triple pane option of casement windows can be no wider than 36 inches wide by 78 inches high.

Essentially there are many factors to consider when determining your windows installation. The standard window sizes are merely one of many factors to add to the equation. Energy efficiency has become increasingly more important in modern society. The money-saving qualities have taken a back seat to becoming more conscious of environmental health. Additionally, new windows can provide a higher level of security with high functioning.

Standard Doors Sizes

There are several major points to consider when deciding on the standard door size Canada allows.  First and foremost, you should determine if it is an interior door or an exterior door. If it is an exterior door, the most common standard maximum height is 96 inches. The widths can vary between 30 and 32 inches. There is also an alternate exterior door option that has a maximum height of 92 inches with widths varying in the range of 24 to 48 inches. Obviously, exterior doors are made of stronger, more resilient materials to withstand the elements and to prevent the weather outside from affecting the inside environment.

The interior door has a different set of variances. The standard interior door is 80 inches high. The width of an interior door has several common sizes beginning at 24 inches. Additional widths of 28, 30, 32, and 36 inches are also common sizes. The average thickness of an interior door in Canada is 1 and 3/8 inches.

Another option to consider for your door replacement is a sliding door. People sometimes overlook this option and stick to the normal options for exterior doors. Sliding glass doors are a good option for allowing a substantial amount of natural light into a room. Surprisingly, these are the least expensive option as well, with a standard size of 6 feet wide by 6 feet tall. Although like other doors and windows, these can be custom manufactured, as well.


If you’re thinking about embarking on a renovation project for your home, don’t overlook the option of new windows. If you’re planning on remaining in your home for at least a few more years, the replacement windows will, in time, pay for them. This is true due to the fact that the new windows will allow your home to save on energy costs due to being more energy-efficient. By replacing old drafty windows, you will be able to maintain a more balanced temperature in your home, therefore driving down your electric bills. If by chance you are planning on putting your home on the market, new windows will also drive up the asking price of your home. Essentially, you just can’t go wrong with obtaining replacement windows as long as you do your research and stick to your plan.

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