Thaisan7, Garage Door Torsion Springs SINGLE LW .250 x 2 1/4" ID x Spring Length: 29" (Without Winding Rods, with Center Nylon Bushing)

How to select the correct spring (Please Read in Product Description and see detail step1-4 in picture) Step 1 is to measure the wire diameter. To do this you will need to measure 10 coils then compare that measurement to the chart (Please see detail in picture No.3) Step 2 is to determine the spring inside diameter, if the spring is broken you can simply use a ruler to measure the inside of the broken end, if the spring is still in one piece you can measure the outside and deduct the wire size X 2. (Please see detail in picture No.3) Step 3 is to measure the length of the spring, Measure the spring only, not including the winding and stationary cone. (Please see detail in picture No.3) Step 4 is only important if ordering a single spring, determine the wind direction of the spring, ( right hand wind ( RW) or left hand wind (LW). Below is an example of the different spring winds. (Please see detail in picture No.3-4) Left wind torsion springs have the wire ending on the left when viewed from the end of the spring.

• Includes 1 Left Wound Spring, Wire size is .250, Inside iameter is 2 1/4".
• Please read the complete listing for instructions on how to measure a torsion spring, Our springs are made in the USA using Oil Tempered, USA made Wire, - this makes for a spring that is durable and will outlast imported springs. Cycle rating depends on the spring size and how many turns are required, *Winding and Stationary cones are included and are Pre-installed (Cones are Made in Canada) Our springs include a 2 year limited warranty against pre-mature failure
• Need help installing or ordering the springs? We provide free support on any products purchased from us. CAUTION: Installing or repairing a garage door can be dangerous task. Garage door springs and cables are under extreme tension and require appropriate safety precautions. Working with garage doors and openers could result in personal injury or death. We recommend all installations, repairs, adjustments, and removals on garage doors be made by a qualified garage door technician.
• First of all it is very important to have the correct spring for your door, if the spring is not matched correctly to the door, it will not work properly and can be dangerous or damage your operator. Make sure that you measure the spring correctly and if you have questions, please message us before ordering(See detail step1-4 in picture).