This is a tension spring roller assembly with a V spring design used by Academy and a variety of other sliding patio door manufacturers. The roller is a 1 in. high-density polyethylene roller with a 1-3/4 in. long tension spring that is a heat treated steel spring. When installed the bent, or angled, flat spring positions the roller assembly so that an adjusting screw adjusts the height of the roller as needed.
UPC: 078874119616
Manufacturer Part No: B 639
Brand Name: Prime-Line
Diameter: 1 in.
Material: Steel
Length: 1/4 in.
Product Type: Spring Tension Roller Assembly
Number in Package: 2 pk
Packaging Type: Carded
Hardware Included: Yes
Compatibility: Academy and other sliding screen door manufacturers