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How To Measure Garage Door Size? What Are Standard Garage Door Sizes?

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How To Measure Garage Door Size? What Are Standard Garage Door Sizes?


If you are currently looking to replace or upgrade your garage door, it is very important to know the size of your garage door. If you buy a garage door that does not match the size of your garage, it may not fit properly. Generally, the sizes of home garage doors are the same, so you can also ask your neighbor's garage door size when you replace your garage door, but it is safest to measure the size of your garage door yourself. The sizes of garage doors used in commercial or other industries vary, and accurate measurements are still required before purchasing.

So how to measure the size of the garage door correctly?

Don't worry, this article will teach you how to measure the size of residential garage doors!

Here are some common garage door sizes:

Single garage door sizes:

Width: 8 ft (2.4 m), 9 ft (2.7 m) or 10 ft (3 m)

Height: 7 ft (2.1 m) or 8 ft (2.4 m)

Double garage door sizes:

Width: 16 ft (4.9 m), 18 ft (5.5 m) or 20 ft (6.1 m)

Height: 7 ft (2.1 m) or 8 ft (2.4 m)

These dimensions are for standard residential garage doors and will determine if they are the same as your garage door, so you still need to measure them. Garage door sizes will also vary depending on the type of door (sectional, roll-up), insulation thickness, etc.

It can be a little difficult to measure your garage door yourself, especially if you have never tried this before, so the methods I give you are simplified to facilitate your measurement.

1. Measure the width of the garage door

First, measure the width of the garage door opening from the inside of one door frame to the inside of the other door frame. Measure from top to bottom. Ideally, they should be the same width, but if there is some error, it is recommended to take the smaller width to avoid wear and tear on the garage door frame when the garage door is in operation

2. Measure the height of the garage door opening

Measure the height of the garage door opening from the floor to the underside of the beam or ceiling. Just like measuring the width, measure from one side to the other. Ideally, the measurements should be the same, but if there is a deviation, choose the smaller one.

3. Measure the side space and headroom

Measure the distance from the door frame at the opening to the inner side wall (side space) and the distance from the beam above the opening to the ceiling (headroom). This part of the space is very important and needs to be accurately measured, so please read the specifications of the garage door carefully before purchasing to understand how much headroom and headroom the garage door needs.

Other considerations when measuring the garage door opening


Before measuring, please carefully observe whether there are obstacles such as openers and lights. They will affect the installation and operation of the garage door. If there are obstacles, it is recommended to change the garage door specifications. If it is not possible, remove the obstacles.

Pay attention to the slope of the floor

Check whether the garage floor is tilted. If it is tilted, measure the slope and take this into account when selecting the door size or ordering a custom door.

Other factors to consider

If your current garage door has insulation, it is recommended that the replacement garage door also has insulation, because the thickness of the door panel will be different, as well as elements such as windows and decorations.

Of course, if you want to be more secure after you have finished measuring, you can also consult a professional.

When the size you measured does not match the standard size of a residential garage door, you need to communicate with the seller whether a customized service can be provided. CHI provides a full range of customized services. Whether you need customized size, customized panel type, or customized coating color, CHI can provide a customized solution that satisfies you. Click here to contact us for quick or expert advice!