In most cases the stretch of the extension spring should be half of the door height.
What size extension spring for garage door.
The pull weight of an extension spring is determined by the color code found on the end of the spring.
This door would use two 210 pound lift extension springs.
American garage door supply strives to make your purchasing process simple and worry free.
Measure door the height.
An unbalanced door is a sign of.
Selecting the right extension spring while measuring torsion springs to make sure you get the right one is fairly easy getting the right extension spring is even easier.
Extension springs 2 pack are the overbuilt 160 lbs.
They stretch to provide lifting power for the garage door.
Torsion springs need to provide enough force to equal the weight of the door.
Color coding is the consistent measure for extension springs a 150lb red spring for a 7 door could have been manufactured in several different sizes if you are not sure what color your old spring was use a bathroom scale to weigh the door while it is unsprung and disconnected from your door opener.
A functional garage door system lifts the door in a balanced manner.
Most extension springs for 7 foot high doors are 25 inches long with a 42 inch stretch.
For an 8 foot high door the spring would be 28 inches long with a 48 inch stretch.
Dasma stands for the door access systems manufacturers association.
Torsion springs and garage door weight.
We would be glad to help.
That s because garage door extension springs have a stripe of color on them that indicates their size.
Or if the door has four extension springs the door would use two 100 pound lift springs and two 110 pound lift springs.
In this post you ll find a garage door spring chart for torsion springs and extension springs.
A failing unbalanced or poorly matched spring.
Finding the right size springs is a crucial part of repairing your garage door and ensuring it lasts for years to come.
Please feel free to give us a quick call if you run into problems choosing the right garage door extension springs.
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The overbuilt 160 lbs.
Torsion springs vs extension springs.
We make purchasing extension springs easy.
The springs have a safety cable inside to prevent injury in case of accidental breakage.
For a complete list of garage door extension springs for 7 8 9 10 11 12 13 and 14 tall doors click here determine the door weight and door height.
Extension springs 2 pack are made of spring steel and designed to be mounted perpendicular above the horizontal track of the garage door.
A more accurate method for weighing either a torsion spring door or an extension spring door is on our youtube channel.