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:

Denton, TX

The city of Denton is the county seat of Denton County, Texas in the United States. Its population was 113,383 according to the 2010 census,[4] making it the eleventh largest city in the Dallas–Fort Worth metroplex. Geographically, it is situated 38 miles  south of the Oklahoma–Texas border and 39 miles northwest of Dallas.

Denton is home to two state universities, the University of North Texas, the largest university in North Texas, and Texas Woman's University, a historically single-sex college completely co-ed since 1994. Altogether, over 45,000 students participate in courses at the two universities. The presence of these two large universities leads to Denton being characterized frequently as a college town.

A Texas land grant led to the formation of Denton County in 1846, and the city in 1857. Both were named after pioneer and Texas militia captain John B. Denton. The establishment of the two universities helped distinguish the city from neighboring regions. As a result, educational services, as well as retail trade, play the largest roles in Denton's economy. The town is known for its active music life, which Paste magazine named America's "Best Music Scene" in 2008. The annual North Texas State Fair and Rodeo and the Denton Arts and Jazz Festival are major events that attract over 300,000 people. Denton has seen considerable growth in recent years and in 2006, Money magazine named Denton No. 58 out of the "Top 100 Best Places to Live in America

The formation of Denton is closely tied with that of Denton County. Unlike other neighboring cities in North Texas, there is no record of a large native-American population in the area before 1800. European settlement began in mid-19th century when William S. Peters of Kentucky obtained a land grant from the Texas Congress and named it Peters Colony. After initial settlement in the southeast area in 1843, the Texas legislature voted to form Denton County in 1846. Residents chose two different county seats (Pinckneyville and Alton) before voting on Denton as the final county seat in 1857. Both the county and the town were named in honor of John B. Denton, a preacher and lawyer, who was killed in a 1841 battle led by General Edward H. Tarrant against Keechi Indians. A commission composed of Otis G. Welch and others laid out the city and named the first streets in 1857. Denton was not incorporated until 1866; its first mayor was J.B. Sawyer.

The city expanded greatly as it became a strong agricultural trade center and manufacturing destination for mills and cottage industries. The creation of the Texas and Pacific Railway in 1881 gave Denton its first rail connection, and brought an influx of people to the area. Despite this, it did not develop into a strong manufacturing location, relying instead on agricultural workforces.

Denton became a college town when North Texas Normal College (now the University of North Texas) was established in 1890 and the Girls' Industrial College (now Texas Woman's University) in 1903. As the universities increased in size, their impact on Denton's economy and culture also grew.

At one time considered the cultural center of Denton, the area surrounding Fry Street was home to a group of shops, music venues, and restaurants. Many of the buildings were originally constructed in the 1920s. From 1914 to 1959, Denton was governed under a mayor-city commission form of government, but a new charter adopted in the latter year switched the city to a council-manager form of government.

In 1954 the regional office of the Federal Civil Defense Administration moved from Dallas to Denton, and a few years later a large underground shelter was completed. For a time it was the only FCDA underground shelter and was designated as the place from which the president of the United States and other federal officials would direct the country in case of attack. The FCDA shelter would later become the headquarters of FEMA Region VI.

Denton grew rapidly from a population of 26,844 in 1960, to 48,063 in 1980. Its proximity to the Dallas-Fort Worth Metroplex, directly connected via Interstate 35, played a major role in this growth. The opening of the DFW International Airport in 1974 led to a small spurt in population. Older manufacturing firms with significant employment such as Moore's Business Forms and Morrison Milling Company were joined by heavy manufacturing companies like Victor Equipment Company in the mid-1960s and Peterbilt in 1980, and led to increased local employment. The population jumped from 66,270 in 1990 to 80,537 in 2000.

In May 2006, the 100-block of the historic Fry Street area was purchased by United Equities, a Houston-based real estate company, which announced that several of the historic buildings would be demolished to accommodate a new mixed-use commercial center. The proposal drew opposition from residents, who sought to preserve Fry Street as a historic and cultural icon for the city. After a new proposal by Dinerstein Cos, the city council approved the project in mid-2010