ORDERING EXTENSION SPRINGS
Extension springs can be ordered by any of the methods listed below
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METHOD #1
- FURNISH 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)
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Example: .177 - 1 3/32"ID -25"
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METHOD #2
- FURNISH SPRING LENGTH
- AMOUNT OF STRETCH (Amount of stretch is half the door height)
- FURNISH THE DOOR WEIGHT
- SPECIFY TYPE OF ENDS (Double loops, single loops or clips)
- SPECIFY TYPE OF DOOR (Sectional, one piece or taylor sectional)
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COMMON EXTENSION SPRING LENGTHS
Extension spring lengths vary by manufacturer. However, the chart below summarizes the length and stretch for common extension springs.
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DOOR HEIGHT
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LENGTH
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STRETCH
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6' 6"
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25"
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39"
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7'
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25"
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42"
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7'
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27"
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42"
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7'
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32"
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42"
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7' 6"
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27"
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45"
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8'
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27"
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48"
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8'
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29"
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48"
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8'
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32"
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48"
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9'
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36"
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54"
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9'
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39"
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54"
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10'
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44"
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60"
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11'
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48"
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66"
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12'
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53"
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72"
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13'
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57"
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78"
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14'
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60"
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84"
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