Looking for a dependable spring replacement for your 1-piece or canopy-style garage door? The P728 28” Plug-End Extension Spring is built to handle the job with strength and consistency. Designed for tilt-up and 1-piece garage doors, this heavy-duty spring is perfect for homeowners and contractors who want lasting performance and easy installation.
Whether you’re replacing worn springs or upgrading your system, the P728 offers the versatility to support a wide range of door weights. Use two springs for lighter doors (90–150 lbs) or four springs for heavier doors (150–300 lbs).
Key Features:
Ideal for tilt-up / canopy-style garage doors
2 springs handle doors up to 150 lbs
4 springs handle doors up to 300 lbs
Total coil length: 28 inches
Outside diameter: 1-5/16 inches
Wire gauge: 0.177 (No. 7)
Initial tension: 110–120 lbs
Max stretch: 18.5 inches
Requires C-hooks or W-hooks (sold separately)
💡 Pro Tip: Always replace springs in pairs for balanced tension and smoother operation. Don’t forget to grab your hooks!
