There are normally 2 SL730-C springs on heavier, 2-car 16 feet 1-piece garage doors
Length over coils: 30 inches
Outside diameter: 1-5/16 inches
Wire gauge: (0.177) #7
Initial tension: 110-120
Maximum allowable stretch: 20 inches
Manufacturer warranty: 1-year
Features
Package Quantity
1
Package Contents
One one-piece garage door lock-end spring
Color/Finish Family
Black
Length (Inches)
30
Material
Steel
Manufacturer Color/Finish
Black
Type
Extension spring
CA Residents: Prop 65 Warning(s)
No
UNSPSC
30171500
Sub-Brand
SL730 Lock-End (.177"" #7 Wire)
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