Prime-line B 638 Screen Door Tension Spring With Roller, 1 In., 2-pk.

This screen door tension spring and roller assembly is designed to keep sliding screen doors operating smoothly and reliably. Used by Academy and other sliding screen door manufacturers, this replacement part restores proper door alignment and glide when existing rollers wear out or springs lose tension. Whether your screen door sticks, drags, or no longer closes smoothly, this assembly addresses common sliding door problems by combining a durable roller with a precision tension spring.

The bent-spring design positions the roller assembly so that an adjusting screw can fine-tune roller height as needed for optimal performance. This two-pack gives you multiple replacement sets for different doors or future maintenance needs.

Features and Benefits

• Heat-Treated Steel Spring: The 1-3/4 inch tension spring is heat-treated for durability and consistent performance over time.
• High-Density Polyethylene Roller: The 1 inch diameter concave roller withstands repeated use while gliding smoothly in door tracks.
• Offset Bent Design: The angled spring positions the roller assembly to enable height adjustment for a perfect fit.
• Two-Pack Value: Includes two complete roller assemblies for multiple doors or spare parts.
• Adjustable Height: An adjusting screw lets you modify roller height to match your door frame and ensure seamless operation.

Specifications

• Brand: Prime-Line
• Model: B 638
• Roller Diameter: 1 inch
• Roller Width: 1/4 inch
• Spring Length: 1-3/4 inches
• Spring Material: Heat-treated steel
• Roller Material: High-density polyethylene
• Spring Design: Bent/offset
• Quantity: 2-pack
• Includes: #8 x 3/8 inch Phillips sheet metal screw