Garage Door Extension Springs 27" X 48" for 8' High Doors

Garage Door Extension Springs for 8-Foot Doors

Make your garage door open and close smoothly and safely with Extension Springs. These springs counterbalance the weight of your door so the opener doesn’t work as hard and the door doesn’t slam shut.

Installation is straightforward: one end attaches to the stationary ceiling bracket with a heavy-duty S-Hook, and the other connects to a safety cable and pulley. As the door opens, the springs retract to help lift it; as the door closes, they extend to control the descent. Initial spring tension helps hold the door open.

Product Highlights

• Designed for 8-ft tall sectional garage doors
• Sold individually — order two for a complete pair
• Extension spring systems require two equal-strength springs
• Safer, easier opening and closing via a sheave pulley system
• High-quality replacement for worn or broken springs
• Color-coded by weight for quick selection (40–280 lbs)
• Springs extend as the door closes and retract as it opens
• Initial spring tension helps keep the door in the open position

Choosing your springs: Match the color code on your current spring’s end. If unreadable, measure door height and weigh the door to determine the correct rating.

DASMA Spring Color Codes — Extension Springs