All of our Extension Springs are sold in pairs. Select the overall weight of the door as each spring in the pair lifts half the doors weight. For use on Garage Doors that have Extension Springs rather than Torsion Springs. These springs run parallel to your garage door's tracks rather than mounted above the door. Our Extension springs come guaranteed for 10,000 cycles and are DASMA (Door & Access Systems Manufacturer’s Association) Color-Coded for easy referance. All of our Torsion and Extension Springs come Oil-Tempered to resist rust and corrosion. Extension spring are most commonly ordered by the weight and height of your garage door, and color coding is used to double check to see if your measurements are accurate.
How to measure your garage door spring(s)
How to replace your spring(s)
$14.99 Value/ FREE pair of cables with every spring order! Enter code at checkout.
7ft high Door --- Enter cables7
8ft high Door --- Enter cables8
WARNING: Torsion springs, extension springs, and other garage door hardware can cause serious injury or death if not handled and installed properly.
Professional installation is recommended. Do NOT attempt to install springs or hardware yourself unless you have the proper tools, reasonable mechanical aptitude and experience, and upper arm strength. Read and understand all instructions before you begin work.
Extension and torsion springs, along with attached hardware, are under extreme tension at all times. All tension must be released from springs before any work is performed.
How to Measure your Torsion Spring
This method of measuring your torsion spring requires you to measure the existing springs. Use this method if the door worked correctly before the spring(s) broke and the garage door has not been tampered with. To measure the torsion springs, follow each of the following steps carefully. If the garage door has two springs measure each spring individually. It is not uncommon to have two different size springs. If you prefer a matching set, we can convert a mismatched set to a matching set. You can also always call us at 260-691-3822.
Step 1 Determine Springs ID (Inside Diameter)
For your broken spring(s) measure the inside diameter of the spring. If the spring is in one piece you can normally find the ID on the cones, P175 for 1 3/4" and P200 for 2". Typically residential springs will have a 1 3/4" or 2" inside diameter.
Step 2 Determine Spring Wind
Most standard residential torsion systems have two torsion springs, one on the right and left. The Left spring is right hand wound(RHW), and the right spring is left hand wound(LHW). If one spring is broken on your torsion system, we highly recommend replacing both springs.
Step 3 Determine Wire Size
The most efficient way to measure the wire size is to measure 10 coils and then measure 20 coils and compare the measurements to the chart below. Measure to the nearest 1/16" of an inch. It is important to make sure there are no gaps between the coils. Measuring coils that have gaps will give incorrect measurements.
Step 4 Determine Spring Length
When measuring your torsion spring, remember that in order to get a proper measurement the spring must be un-wound. If the spring is in two parts, unscrew set screws and connect spring ends together to get a total measurement. Do not include the cones in the measurement.