You also need to know the size of the wire itself.
How to measure wire size garage door spring.
While this might seem difficult to comprehend measuring the wire size is actually as easy as running a tape measure along the distance between 10 and 20 coils.
How to measure garage door springs for garage spring replacement.
The spring will grow 7 5 coils or 7 5 x 250 for the coil size or 1 7 8.
For example on a seven foot high garage door a 34 spring comprised of 250 wire would grow eight coils when it is wound and stretched.
Spring length how long each spring is 4.
Typically once you measure your garage door spring you need not just take a measuring tape and write down the length from side to side.
Inside diameter 90 of doors have a 2 0 inside diameter 3.
When you measure a garage door spring it s not enough to simply take a tape measure and record the length from one end to the other.
How to determine the wire size on your garage door springs.
Spring orientation only worry about this if you have a 1 s.
Essentially you should identify the wire size also.
This determines the strength of the spring.
Wire size is the most important measurement.
Springs are usually stretched an extra 1 8 so the total addition to the spring length is eight coils or two inches.