What Size Torsion Spring for a 16×7 Garage Door? Choosing the Right Size Torsion Spring

what size torsion spring for 16x7 garage door

Garage doors play a vital role in our daily lives, providing convenience and security. Torsion springs are a critical component of a garage door system, responsible for counterbalancing the door’s weight and ensuring smooth and safe operation. When it comes to selecting the right size torsion spring for a 16×7 garage door, there are several factors to consider. In this blog post, we will explore the importance of torsion springs, their role in garage door operation, and provide guidelines for choosing the appropriate size for your 16×7 garage door.

Understanding Torsion Springs

Torsion springs are tightly wound metal coils that store mechanical energy when twisted. They are installed above the garage door, parallel to the door’s horizontal tracks, and are attached to a shaft. As the door opens or closes, the torsion springs unwind or wind up, respectively, balancing the door’s weight throughout the process. This counterbalancing effect allows the door to be operated manually or by a motorized garage door opener with ease.

The Importance of Properly Sized Torsion Springs

Selecting the correct size torsion spring is crucial for the optimal functioning and longevity of your garage door. If the spring is too weak, it may result in an imbalanced door that is difficult to open or close, placing excessive strain on the opener or causing the door to become stuck. Conversely, if the spring is too strong, it can lead to a door that opens too quickly or slams shut, potentially causing damage to the door and posing a safety risk.

Determining the Right Size

To determine the appropriate size torsion spring for your 16×7 garage door, you will need to consider the door’s weight, track radius, and cable drum information. The door’s weight is typically specified by the manufacturer and can range from 150 to 250 pounds for a standard 16×7 garage door. It is crucial to obtain accurate measurements, as using the wrong weight specification can result in an imbalanced door.

Next, you’ll need to measure the track radius, which is the distance from the center of the torsion spring shaft to the center of the horizontal track. This measurement is crucial in determining the spring’s torque, or its ability to rotate the shaft and balance the door’s weight.

Lastly, you should gather information about the cable drums, as different drum sizes are used depending on the door’s weight. Cable drums control the lifting cables and affect the torsion spring’s performance.

Consulting a Professional

While it is possible to calculate the appropriate size torsion spring yourself, it is recommended to consult a professional garage door technician. They have the expertise and experience to accurately assess your garage door system and determine the ideal torsion spring size. Professional technicians also ensure that all safety precautions are followed during installation, minimizing any potential risks.


Choosing the correct size torsion spring is essential for the smooth and safe operation of your 16×7 garage door. By considering factors such as the door’s weight, track radius, and cable drum specifications, you can select a torsion spring that provides optimal balance and performance. Remember, if you are unsure about the process, it is always best to consult a professional garage door technician who can guide you through the selection and installation process, ensuring the longevity and reliability of your garage door system.



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