- Heavy Duty Garage Door Extension Springs ( Brown ), These are 25-Inch long at rest and 67-Inch long when fully stretched. And and fit for configurations on residential doors that are no higher than 7 ft. Tall.
Key Features
Made from professional ASTM-A228 spring steel coils that have been heat-treated to ensure they have extremely high durability. The latest electrophoretic coating technology offers excellent corrosion resistance and excellent tensile properties. Salt spray testing lasts up to 300 hours with a minimum of 16,000 cycles (a cycle is 1 open & close of the door). You NEVER need to maintain the spring and keep your hands clean during installation.
If your garage door has a broken garage door spring, it is reasonably straightforward to replace if you are an experienced DIY enthusiast. This comes with the caveat that you need to be extremely careful when carrying out this procedure, as not following the correct safety measures can be dangerous. But if you know what you are doing and have a few basic tools on hand, you can save yourself a bit of cash by doing it yourself. We have included the installation instructions in the product, please follow the instructions on the specification.
The type selection of the tension spring only needs to be based on the size of the garage door. For different garage door sizes, please refer to the table in the figure for the type of tension spring to choose.