SSC 210 lb Garage Door Extension Spring – 27-48 Series – White – 8′ Door – Clips Included

🇺🇸 Made in USA

This SSC garage door extension spring is designed for compatible 8-foot-high sectional garage doors requiring a 210 lb spring rating. It belongs to the 27-48 Series and features white identification markings and clipped ends for attachment to compatible extension-spring hardware.

Manufactured by Service Spring Corporation from black-coated, oil-tempered spring wire, this spring is rated for a minimum of 10,000 operating cycles. Correctly matched springs help counterbalance the door for smooth operation and reduce unnecessary strain on the garage door opener.

Specifications

Understanding the 27-48 Measurement

The 27-48 designation refers to approximately 27 inches of relaxed spring length with 48 inches of additional stretch, resulting in approximately 75 inches when extended.

48 inches is the stretch amount—not the total extended length. Confirm the spring series, rating, and attachment style when selecting a replacement.

Common Uses

• Replacing worn or broken extension springs on compatible 8-foot-high sectional garage doors.

• Restoring proper counterbalance on systems requiring 210 lb-rated springs.

• Servicing extension-spring installations with clipped-end attachment hardware.

Compatibility and Spring Selection

This spring is intended for compatible extension-spring counterbalance systems, typically installed alongside the horizontal tracks. It does not replace a torsion spring mounted on a shaft above the door.

Verify the following before ordering:

• 8-foot door height

• 27-48 spring series

• 210 lb required spring rating

• Clipped-end attachment configuration

• Compatible pulleys, cables, and mounting hardware

Do not select a spring by color alone. White identification markings repeat across different spring ratings.

In a conventional two-spring residential system, a matched pair of 210 lb-rated springs is used for an approximately 210 lb door—not a 420 lb door. Have a garage door professional confirm the actual door weight and counterbalance requirements, especially if the door has been modified.

Installation Notes

Replacing both extension springs together is recommended when they are the same age to help maintain balanced lifting and consistent performance.

Inspect the pulleys, lift cables, safety cables, and attachment points during replacement. Replace worn or damaged hardware before returning the door to service.

Safety cables must run through each extension spring to help contain it if it breaks. The included end clips attach the spring to compatible hardware; they do not replace safety cables.

Safety

Garage door springs operate under high tension and can cause serious injury. Professional installation is recommended. Never disconnect or adjust a spring, cable, or attachment while under tension.

Do not operate a door with a broken spring or use the opener to compensate for an unbalanced door.

Order the Correct Replacement

**Choose this SSC 210 lb white extension