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How To Measure Extension Springs

It is important to measure correctly to ensure that you purchase the correct size springs call for help 800-997-7606


 
 
 

Garage Door Parts


Extension Springs

We will require the garage door weight and height, if you are not sure which spring you need.

1. The weight an extension spring can support is marked by the color code at the end of the spring.

2. Measure the garage door height. The standard height is usually 6 foot 6 inches or 7 feet.

Spring Color Code
Weight in pounds
Weight in pounds
Single Door
Double Door
Gold
80

Lt. Blue
90
190
Tan
100
200
White
110
210
Green
120
220
Yellow
130
230
Blue
140
240
Red
150
250
Brown
160
260
Orange
170
270
Gold
180
280
Lt. Blue
190
290
Tan
200
300

 

DASMA OFFICIAL COLOR CODES
EXTENSION SPRINGS
#10
WHITE
#20
GREEN
#30
YELLOW
#40
BLUE
#50
RED
#60
BROWN
#70
ORANGE
#80
GOLD
#90
LT.BLUE
#100
TAN
#110
WHITE
#120
GREEN
#130 YELLOW
#140 BLUE
#150 RED
#160 BROWN
#170 ORANGE
#180 GOLD
#190 LT. BLUE
#200 TAN
#210 WHITE
#220 GREEN
#230 YELLOW
#240 BLUE
#250 RED
#260 BROWN
#270 ORANGE
#280 GOLD
#290 LT. BLUE
#300 TAN

To Weigh Your Door:

1. Raise door completely. Disconnect power and lifting arm of garage door opener.

2. Fasten "C" clamps or vice grips under bottom rollers to retain door. With tension completely off extension springs, disconnect springs from track support.

3. Remove "C" clamps or vice grips and lower door by hand. Note that entire weight of door, which could exceed several hundred pounds, has to be lowered slowly by hand so more than one person is needed.

4. Set bathroom scale to zero and place under center of door and record door weight.

5. If door weight exceeds capacity of the scale, use 2 bathroom scales. Add a 2 x 4 with one end on one scale and the other on a second scale with the door perpendicular to the 2 x 4. Add the respective weight from each scale together to get the total weight of the garage door.


Extension Springs for a 8' High Door




COMMON EXTENSION SPRING WIRE SIZES

Extension spring wire sizes vary by manufacturer. However, the chart below summarizes the sizes for common extension springs.

LENGTH of 10 Coils
LENGTH of 20 Coils
WIRE SIZE
1 1/4"
2 1/2"
.125
1 3/8"
2 3/4"
.135
1 7/16"
2 7/8"
.142
1 1/2"
3"
.1483
1 9/16"
3 1/8"
.1562
1 5/8"
3 1/4"
.162
1 11/16"
3 3/8"
.170
1 3/4"
3 1/2"
.177
1 7/8"
3 3/4"
.1875
1 15/16"
3 7/8"
.192
2 1/16"
4 1/8"
.207
2 3/16"
4 3/8"
.2187
2 1/4"
4 1/2"
.2253
2 5/16"
4 5/8"
.2343
2 7/16"
4 7/8"
.2437

After you determine these measurements, then proceed to the below links to order.


Don't see the exact size you need?  Call us toll free 800-997-7606