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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"
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COMMON EXTENSION SPRING WIRE SIZES
Extension spring wire sizes vary by manufacturer. However, the chart below summarizes the sizes for common extension springs.
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LENGTH of 10 Coils
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LENGTH of 20 Coils
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WIRE SIZE
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1 1/4"
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2 1/2"
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.125
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1 3/8"
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2 3/4"
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.135
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1 7/16"
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2 7/8"
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.142
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1 1/2"
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3"
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.1483
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1 9/16"
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3 1/8"
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.1562
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1 5/8"
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3 1/4"
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.162
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1 11/16"
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3 3/8"
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.170
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1 3/4"
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3 1/2"
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.177
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1 7/8"
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3 3/4"
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.1875
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1 15/16"
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3 7/8"
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.192
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2 1/16"
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4 1/8"
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.207
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2 3/16"
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4 3/8"
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.2187
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2 1/4"
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4 1/2"
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.2253
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2 5/16"
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4 5/8"
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.2343
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2 7/16"
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4 7/8"
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.2437
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