Extension Springs

How to order garage door extension springs:

You will need to know the height and weight of your door to order replacement springs, and then select the type of spring ends best fit your needs.

Step 1

Door height:
Measure the height of your door from bottom to top of the door panels. 6'6"-7'5" - choose 7ft
7'6" - 8'2" - choose 8ft

Step 2

Door Weight (how to weigh your door):

1. Raise the garage door to the fully open position. Be sure to disconnect your automatic garage door opener, if you have one.
2. Use C-clamps or vice grips under bottom rollers to keep the door in the open position. With tension completely off extension springs, disconnect springs from track support.
3. Place a bathroom scale under center of door.
4. Remove C-clamps or vice grips and lower door by hand. Lower door slowly by hand onto the scale. This may require more than one person, doors are very heavy and may crash down if you cannot hold it.
5. Record the weight of the door.
6. If door weight exceeds capacity of the scale, use 2 bathroom scales and use a 2x4 with one end on one scale and the other on a second scale with the door perpendicular to the 2 x 4. Be sure to take into account how much the scale reads with the 2x4 on it and deduct from weight you end up with. Add the weight reading from both scales together to get the total weight of the garage door.

Step 3

Verify Color Code:
Extension springs are also color coded, but the colors repeat every hundred pounds, so you should verify you are selecting the correct spring based on the height, weight and color if possible.

The color codes are listed below for reference:

• Blue - 40lbs, 140lbs, 240lbs
• Red - 50lbs, 150lbs, 250lbs
• Brown - 60lbs, 160lbs, 260lbs
• Orange - 70lbs, 170lbs, 270lbs
• Gold - 80lbs, 180lbs, 280lbs
• Light Blue - 90lbs, 190lbs, 290lbs
• Tan - 100lbs, 200lbs, 300lbs
• White - 110lbs, 210lbs, 310lbs
• Green - 120lbs, 220lbs, 320lbs
• Yellow - 130lbs, 230lbs, 330lbs

Step 4

Select Ends:
There are three options for spring ends that have their pros and cons. We only offer double looped ends for doors up to 200lbs as we believe this is the best option available for those sizes. You can replace any end type with double looped.

• Single Looped: These are the easiest to replace. Available for doors weighing up to 200lbs. Ends aren't as strong as double or clipped ends. 
• Double Looped: More durable than single looped. Standard on doors up to 200lbs.
• Clipped Ends: Most durable extension spring ends. Standard on doors over 200lbs.

Extension springs require 2 springs to pull the listed weight. Example: it takes two 80lb gold springs to lift a 80lb door. Please see the item description for the spring you want to order for more specific information on size, life cycle, etc. We recommend replacing both springs at the same time to make sure they are evenly balanced. Over time springs will stretch and fatigue. You may run into problems when only replacing one related to those issues.