Torsion Springs

Measure the length of the unwound spring.
Do not measure the end caps of the springs. If your garage door has
left and right wound springs, measure both, as they may differ.

Next, Measure the Inside Diameter (ID) of the spring. 

Next, Determine the Wire Size.
Measure the length of 10 coils of the spring.
Example: 10 coils measures 2 1/4" = .225 wire size. (See chart below for examples)

If you currently have 2 springs on your garage door, you should replace both springs at the same time.

About City:

Frisco, TX

Frisco is an affluent city in Collin and Denton Counties in the U.S. state of Texas and a rapidly growing suburb of Dallas. As of the 2010 Census, 116,989 people were living in Frisco up from 33,714 in the previous census. Frisco was the fastest growing city in the United States in 2009, and also the fastest growing city in the nation from 2000-2009. In the late 1990s, the northern Dallas–Fort Worth Metroplex suburban development tide hit the northern border of Plano and spilled into Frisco, sparking explosive growth into the 2000s. Like many of the cities located in the booming northern suburbs of Dallas, Frisco serves as a bedroom community for many professionals who work in the Dallas–Fort Worth Metroplex.

Since 2003, Frisco has received the designation "Tree City USA" by the National Arbor Day Foundation. In 2007, Frisco received the National Arbor Day Foundation Growth Award for the third year in a row. This award recognizes environmental improvement and encourages a higher level of tree care and tree preservation within the community. A 2007 Forbes study named Frisco as the seventh-fastest growing suburb in the United States.

When the Dallas area was being settled by American pioneers, many of the settlers traveled by wagon trains along the old Shawnee Trail. This trail was also used for cattle drives north from Austin. This trail later became the Preston Trail, and later, Preston Road. Preston Road is one of the oldest North South Roads in all of Texas. With all of this activity, the community of Lebanon was founded along this trail and granted a U.S. post office in 1860. In 1902, a line of the St. Louis-San Francisco Railway was being built through the area, and periodic watering holes were needed along the rails for the steam engines. The current settlement of Lebanon was on the Preston Ridge and was thus too high in elevation, so the watering hole was placed about four miles (6 km) to the west on lower ground. A community grew around this train stop. Residents of Lebanon actually moved their houses to the new community on logs. The new town was originally named Emerson, but that name was rejected by the U.S. Postal Service as being too similar to another town in Texas. In 1904, the residents chose Frisco City in honor of the St. Louis-San Francisco Railway on which the town was founded, later shortened to its present name.