Prime-line B 570 Screen Door Tension Spring With Roller, 1 In., 2-pk.

This tension spring roller assembly is designed for sliding patio doors and consists of a heat-treated steel V-shaped tension spring paired with a molded plastic roller. The unit provides the replacement parts needed to restore smooth sliding action in patio door systems used by major manufacturers.

Whether you're repairing an existing patio door or upgrading worn components, this 2-pack offers versatile compatibility with a variety of door makes and models, making it a practical solution for homeowners and repair professionals alike.

Features and Benefits

• V-Shaped Steel Spring: The 2-inch heat-treated steel tension spring delivers steady pressure as the door slides back and forth along the track.
• 1-Inch Plastic Roller: The high-density polyethylene roller features a concave-shaped center groove (1/4 inch wide) that tracks smoothly along the door frame.
• Universal Compatibility: This assembly is used by several major patio door manufacturers, making it compatible with many different sliding door makes and models.
• Easy Installation: The simple design allows for quick replacement, suitable for both professional contractors and do-it-yourself homeowners.
• 2-Pack Quantity: Two complete assemblies are included in each package.

Specifications

• Brand: Prime-Line
• Model: B 570
• Quantity: 2-pack
• Roller Diameter: 1 inch
• Roller Width: 1/4 inch
• Spring Length: 2 inches (before and after bending)
• Spring Material: Heat-treated steel
• Roller Material: High-density polyethylene (plastic)