Spring Selector
Bootstrap UI • Live calc
Door height
7 ft (84″)
8 ft (96″)
Door weight
lb
# of springs
2
1
Drum diameter
4.0″ (std)
5.5″ (hi-lift)
6.0″
3.75″
in
Spring inner diameter (ID)
1.75″
2.0″
2.25″
Recommendation
ID:
2.0″
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Copy size
Turns (N), ¼-rounded
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Torque per spring
—
in·lb
Target IPPT
—
in·lb/turn
Alternatives
All available wires
Size
Note
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