How measure for replacement garage door springs
PLEASE NOTE, Any variation of your actual spring dimensions will alter counterbalance and affect the overall life of the replacement industrial garage door spring. Here are the instructions on how to measure your existing commercial spring. If you need help, contact customer support at 1-800-829-6002
IMPORTANT
Please Double Check all your measurements
STEP 1
Measure The Overall Length Of The Garage Door Spring--UNWOUND.Take all your measurements from the broken spring. Measure the spring only from coil to coil. Do not include the winding and stationary ends.
STEP 2
Measure the Inside Diameter Of The your garage door Spring
It will be one of the following: 3 3/8" or 3 3/4"
STEP 3
Measure the length of 10 coils.
Refer to Wire Chart. Example: 10 coils measures 2 3/4" = .273 wire size.
Also Measure the length of 20 Coils
20 Coils measures 5 1/2"=.273 wire size.
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Wire Chart
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Length of 10 Coils
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Wire Size
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2 3/4"
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.273
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2 13/16"
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.283
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2 7/8 "
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.289
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2 15/16"
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.295
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3 1/16"
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.306
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3 1/8"
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.312
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3 3/16 "
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. 319
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3 5/16 "
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.331
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3 7/16"
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.343
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3 5/8"
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.362
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3 3/4 "
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. 375
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Length of 20 Coils
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Wire Size
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5 1/2 "
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.273
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5 5/8"
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.283
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5 3/4"
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.289
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5 7/8"
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.295
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6 1/8"
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.306
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6 1/4"
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.312
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6 3/8"
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.319
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6 5/8"
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.331
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6 7/8"
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.343
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7 1/4"
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.362
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7 1/2 "
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. 375
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Determine Spring Wind.
Standing inside the garage, looking at the spring(s)
If the spring is mounted Left side of center, the spring is Right Hand Wound.
If the spring is mounted on the right side of center the spring is Left Hand Wound.
Look at the end of your spring and refer to example below.
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