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:

Prior to the arrival of the European and American immigrants into the Allen area, Caddo and Comanche Indian tribes inhabited the region. The Indian tribes migrated westward as the early settlers entered the area and were eventually removed to the Indian Territory to the north of the Red River.

Immigrants of European descent began arriving into the Allen area in the early 1840′s in search of free land, traveling the Texas Road and the Central National Road constructed by the Republic of Texas. A stage line ran from Bonham through McKinney to Allen and Plano, crossing Rowlett Creek where SH 5 now crosses. Allen was part of the Peter’s Colony Land Grant from the Republic of Texas to the Texas Emigration & Land Company.

In 1872, Allen was named after Ebenezer Allen, a former Texas attorney general who promoted the railroad. A post office was constructed in 1876. By 1884, Allen had established of a few churches, a flourmill, a school and a chair factory, and was home to approximately 350 residents.

The Houston and Texas Central Railroad (H&TC), constructed through Allen in 1872 and laid out the original township of Allen. In 1918, the H&TC erected a combination freight/passenger depot in the Allen Central Business District. The first train robbery in Texas took place in Allen on February 22, 1878, when Sam Bass and his associates pillaged the train. Allen was a short ride from their hideouts in the Elm Trinity brush lands.

In 1907 the Texas Traction Company (Interurban) purchased right-of-way on the west side of the H&TC main line track to construct the Interurban line through Allen as a stop on its route from Denison to Dallas (completed in 1908). In 1915 a devastating fire destroyed most of the business district between the Interurban tracts and the railroad. The Interurban closed in 1948 and the population of Allen declined to 400 in 1950.

The town was officially incorporated in 1953. Home Rule Status was adopted in 1979 with a Council/Manager form of government. The construction of US 75 in 1960 had a similar impact on Allen’s future as the railroad almost a century before. In the 1980’s, Developmental Learning Materials and InteCom, Inc. relocated to Allen, leading the way for further corporate startups and relocations