SSC 8' Garage Door Extension Spring – 400 lb – 27-48 Series – Tan – Clips Included

🇺🇸 Made in USA

This SSC garage door extension spring is designed for compatible sectional garage doors approximately 8 feet highrequiring a 400 lb spring rating.

Manufactured by Service Spring Corporation (SSC), this heavy-duty extension spring belongs to the 27-48 Series and features a clipped-end configuration with clips included for compatible installations.

The spring is manufactured from black-coated, oil-tempered spring wire, uses the Tan identification color for the 400 lb rating, and is rated for a minimum of 10,000 operating cycles.

Specifications

27-48 Series for 8' High Doors

This spring is part of SSC's 27-48 Series, intended for compatible 8-foot-high sectional garage doors.

The 27-48 designation identifies the spring series and should not be treated as a literal physical measurement.

Correct spring selection should be based on the complete spring specification, including:

• Door height

• Spring series

• Required pull rating

• End configuration

• Existing spring setup

• Actual door counterbalance requirements

400 lb Pull Rating

This spring provides a 400 lb pull rating and is intended for very heavy sectional garage door applications requiring this specific counterbalance capacity.

Using an incorrectly rated spring can cause:

• Heavy manual operation

• A door that rises unexpectedly

• Poor door balance

• Uneven cable tension

• Excessive opener strain

• Premature pulley, cable, and hardware wear

Always verify the required spring rating before installation.

Tan Color Code

The Tan identification color corresponds to the 400 lb extension-spring rating for this configuration.

Extension-spring colors repeat across different weight ranges, so color alone should never determine the correct replacement spring.

Before ordering, confirm:

• 8' door application

• 27-48 Series

• 400 lb pull rating

• Tan identification

• Clipped-end configuration

Clipped Ends – Clips Included

This version features clipped ends and includes the clips required for compatible installation.

This differs from extension springs using double-loop or open-loop ends.

Always compare your existing spring, end style, and attachment hardware before ordering.

Heavy-Duty Extension Spring Application

A 400 lb extension spring is intended for substantially heavier applications than typical residential extension springs.

Correct spring selection depends on the actual door weight, pulley arrangement, cable setup, track configuration, and overall counterbalance requirements.

Do not substitute this spring for a lighter-rated spring simply because the springs appear similar.

How Extension Springs Work

Extension springs are typically installed alongside the horizontal tracks on both sides of a sectional garage door.

As the door closes, the springs stretch and store mechanical energy. As the door opens, that stored energy helps lift and counterbalance the weight of the door.

A correctly matched extension-spring system helps provide:

• Smooth door travel

• Proper counterbalance

• Correct cable tension

• Easier manual operation

• Reduced garage door opener strain

Compatibility & Fitment

Extension springs are not universal.

This spring should be selected when your system specifically requires:

• 8' high garage door

• 27-48 Series

• 400 lb pull rating

• Tan color code

• Clipped ends with clips

Also inspect the existing:

• Lift cables

• Pulleys

• Safety containment cables

• Spring attachment points

• Track hardware

• Rear track supports

• Fasteners

Replace worn or damaged components before returning the door to service.

Replace Extension Springs in Pairs

For garage doors using two extension springs, replacing both springs as a matching pair is generally recommended.

Both springs normally experience approximately the same number of operating cycles. Pairing one new spring with one fatigued spring can result in:

• Uneven lifting force

• Unequal cable tension

• Crooked door travel

• Poor door balance

• Increased hardware wear

Safety Cables Strongly Recommended

Extension-spring systems should use properly installed safety containment cables running through each spring.

If an extension spring breaks, the safety cable helps contain the spring and reduces the risk of it becoming a dangerous projectile.

Inspect existing safety cables whenever replacing extension springs.

Ready to Order?

If your existing system requires an 8' door, SSC 27-48 Series extension spring, 400 lb rating, Tan identification, and clipped-end configuration, this spring is ready for your repair.

Add it to your cart today and restore proper garage door counterbalance with the correct SSC-made extension spring.

Before ordering, double-check:

• 8' door height

• 27-48 Series

• 400 lb pull rating

• Tan color code

• Clipped ends

• Clips required

Safety Warning

⚠️ Garage door extension springs operate under substantial tension and can cause severe injury, death, or property damage if improperly handled.

Never remove an extension spring, pu