SL730 #7 .177 Wire 30" Lock End Extension Springs for One Panel Garage Doors

Determine your garage spring size
  1. Examine the label at the end/s of your existing springs
  • FIRST LETTER/S: these determine the securing mechanism or type of spring. A lock end springs label will start with SL
  • FIRST NUMBER: this is the gauge of wire that the coil is crafted from. A 7 means 7-gauge wire
  • SECOND NUMBERS: these determine the physical length of the spring
    2. If your spring is missing its label
  • Get a tape measure or ruler
  • Place sideways over the coil to get the diameter
  • Place it lengthwise and measure the length of ten coils, then divide this number by ten. This will give you the wires size/gauge
Specifications
  • Curved, locking pins secures spring at both ends
  • Rated for 9000 cycles of operation
  • When adding to cart, please select a spring size:
  1. SL728 - 28 IN Lock-End Spring (.177 IN #7 Wire)
  2. SL730 - 30 IN Lock-End Spring (.177 IN #7 Wire)
  3. SL732 - 32 IN Lock-End Spring (.177 IN #7 Wire)
  4. SLR729C - 29 IN Lock-End Spring (.177 IN 7-Gauge Wire)
  •  Designed for use with the E900-R Tension-Lift Hardware Kit for Single-Panel Garage Doors
  •  Replacing hook/joining hardware to match tension of a new spring is strongly recommended
  •  Single-spring assemblies will use a C-Hook
  •  Double-spring assemblies will use a W-Hook