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

For 8 ft. Tall Garage Doors

Extension springs help counterbalance the weight of your overhead garage door, making it safer and easier to open and close. Each spring connects with a heavy-duty S-Hook at the track support and a safety cable-and-pulley system at the door.

• As the door opens, springs retract to assist the opener.

• As the door closes, springs extend to reduce strain and control descent.

• Initial spring tension helps hold the door open.

Product Highlights

• Replacement springs for 8 ft. tall doors

• Sold INDIVIDUALLY – both springs must match strength rating

• Supports door weights from 50 lbs. to 280 lbs.

• Color-coded by weight for easy identification

• Works with a sheave pulley system to transfer weight

• High-quality replacement for worn or broken springs

Choosing the Correct Springs

1. Find the Color Code – Look for the painted end of the spring.

2. Measure Door Height – Ensure you select the correct size.

3. Weigh the Door – If color code is missing, follow steps below.

How to Weigh Your Door:

• Disconnect opener and springs, secure the door with clamps, then carefully lower it by hand.

• Place a bathroom scale under the center of the door.

• For heavier doors, use two scales with a 2x4 and add both weights together.

DASMA Color Codes (Extension Springs)

• 40 lbs – Blue

• 50 lbs – Red

• 60 lbs – Brown

• 70 lbs – Orange

• 80 lbs – Gold

• 90 lbs – Light Blue

• 100 lbs – Tan

• 110 lbs – White

• 120 lbs – Green

• 130 lbs – Yellow

• 140 lbs – Blue

• 150 lbs – Red

• 160 lbs – Brown

• 170 lbs – Orange

• 180 lbs – Gold

• 190 lbs – Light Blue

• 200 lbs – Tan

• 210 lbs – White

• 220 lbs – Green

• 230 lbs – Yellow

• 240 lbs – Blue

• 250 lbs – Red

• 260 lbs – Brown

• 270 lbs – Orange

• 280 lbs – Gold

• 290 lbs – Light Blue

• 300 lbs – Tan