SSC 8' Garage Door Extension Spring – 300 lb – 27-48 Series – Tan – Clips Included

🇺🇸 Made in USA

This SSC garage door extension spring is designed for compatible 8-foot-high sectional garage doors requiring a 300 lb spring rating.

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

The spring uses a Tan identification color corresponding to the 300 lb pull rating and is rated for an industry-standard minimum lifecycle of 10,000 operating cycles.

Specifications

27-48 Series for 8' High Doors

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

The 27-48 designation is the spring series, not simply a product dimension that should be written as “27" × 48".”

For proper replacement, confirm the complete spring specification, including:

• 8' door height

• 27-48 Series

• 300 lb pull rating

• Tan identification

• Clipped-end configuration

• Existing spring and hardware setup

300 lb Pull Rating

This extension spring provides a 300 lb pull rating and is intended for heavier garage door applications requiring this specific counterbalance capacity.

Using an incorrectly rated extension spring can cause:

• A door that feels excessively heavy

• A door that rises unexpectedly

• Poor door balance

• Uneven cable tension

• Excessive opener strain

• Premature pulley and hardware wear

Always verify the required spring rating before ordering.

Tan Color Code

For this spring:

Tan = 300 lb extension-spring rating

Extension-spring colors repeat across different weight ranges, so color alone should never be used to select a replacement spring.

Confirm the complete specification before ordering.

Clips Included

This version is supplied with installation clips for compatible extension-spring systems.

The clipped-end configuration differs from springs using:

• Double-loop ends

• Open-loop ends

• Other attachment configurations

Compare the existing spring and attachment hardware to ensure the replacement configuration matches your system.

How Extension Springs Work

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

As the door closes, the springs stretch and store mechanical energy. As the door opens, the springs contract and help counterbalance the weight of the door.

A correctly matched extension-spring system helps provide:

• Smooth door movement

• Proper counterbalance

• Reduced opener strain

• Correct cable tension

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