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How to measure your spring

METHOD #1

  • FURNISH WIRE SIZE-measure 20 coils and compare the measurement to the chart below to determine wire size.
  • MEASURE THE INSIDE DIAMETER TO THE NEAREST 1/32"
  • FURNISH SPRING LENGTH (Do not include loops in this measurement)
  • SPECIFY TYPE OF ENDS (Double loops, single loops or clips)
  • SPECIFY TYPE OF DOOR (Sectional, one piece or taylor sectional)

Example: .177 - 1 3/32"ID -25"


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