The Spring Latch Set with Sash Chain – Keyed Alike is a complete mechanical garage door latching system designed for sectional doors that use spring-loaded side latches operated through a sash-chain linkage.

This keyed-alike version is especially useful when multiple compatible garage doors need to operate with the same key arrangement. Instead of maintaining a separate key for every door, keyed-alike lock systems can simplify access for property owners, maintenance personnel, commercial facilities, multi-door garages, and service departments.

The set includes the primary hardware needed to create a two-sided spring-latch system, including spring latches, striker plates, 18 feet of sash chain, S-hooks, an inside release handle, fasteners, and associated installation hardware.

Features

• Complete spring latch and sash-chain locking system

• Keyed-alike configuration

• Designed for compatible sectional garage doors

• Includes spring-loaded latches for both sides of the door

• Includes matching latch plates / striker plates

• Includes 18 ft of sash chain

• Includes S-hooks

• Includes an inside release handle

• Installation fasteners included

• Mechanical operation requires no electricity or batteries

• Suitable for residential and light-commercial garage doors

• Useful for multiple-door installations where matching key access is preferred

• Master-key configurations are available through SSC

What Does “Keyed Alike” Mean?

Keyed alike means compatible lock assemblies can be supplied so that the same key operates multiple locks.

This can be especially convenient for:

• Multi-car garages

• Apartment and condominium garages

• Commercial buildings

• Storage facilities

• Property-management applications

• Shops with several overhead doors

• Installers servicing multiple doors for the same customer

Instead of carrying a different key for every garage door, a keyed-alike system can provide a simpler and more convenient access arrangement.

How the Spring Latch System Works

The spring latches are mounted near the lower left and right sides of the garage door.

The supplied sash chain connects the latch mechanisms to the interior release system. When the release mechanism is operated, tension on the sash chain pulls the spring latches away from their striker plates, allowing the door to open.

When released, the spring-loaded latch mechanism returns toward its locking position.

With proper installation and adjustment, the system provides mechanical locking at both sides of the garage door rather than relying on a single central locking point.

18-Foot Sash Chain

The kit includes 18 feet of sash chain, providing sufficient length for routing the mechanical linkage across many common residential sectional garage door widths.

During installation, the chain is routed between the release mechanism and the spring latches and adjusted so both sides release correctly and at approximately the same time.

Correct chain adjustment is important. Excessive slack can prevent the latches from fully retracting, while excessive tension can interfere with proper latch engagement.

Spring-Loaded Side Latches

The included spring latches provide locking points on both sides of the garage door.

When engaged, the latches interact with the matching plates at the vertical track area to help prevent the door from being raised.

Using two side latches helps distribute the mechanical locking function across both sides of the door.

Common Applications

The SSC 275A Spring Latch Set is suitable for:

• Residential sectional garage doors

• Light-commercial overhead doors

• Detached garages

• Multi-door garages

• Replacement of worn or missing lock hardware

• Restoration of traditional garage door mechanical locks

• Property-management applications

• Commercial or residential installations requiring keyed-alike access

• Doors that use a sash-chain-operated locking system

Keyed-Alike Applications

The 275A version is particularly useful when installing or replacing lock hardware across several doors.

Examples include:

• A three-car garage where one key should operate all doors

• Multiple garage doors at the same commercial property

• Apartment or condominium maintenance access

• Storage or service facilities with several overhead doors

• Property managers who want fewer individual keys to maintain

SSC also lists master-key availability for this product, which may be useful for larger multi-door installations.

Specifications

• Product Type: Spring Latch Set with Sash Chain

• SSC Part Number: 275A

• Configuration: Keyed Alike

• Latch Type: Spring Loaded

• Linkage Type: Sash Chain

• Sash Chain Length: 18 ft

• Spring Latches: Included

• Latch / Striker Plates: Included

• S-Hooks: Included

• Inside Release Handle: Included

• Installation Fasteners: Included

• Master-Key Option: Available through SSC

• Operation: Mechanical

Package Contents

• Spring Latches

• Latch / Striker Plates

• 18 ft of Sash Chain

• S-Hooks

• Inside Release Handle

• Installation Fasteners and Hardware

275 vs. 275A

SSC lists two versions of this sash-chain spring latch set:

Part 275 – Spring Latch Set with Sash Chain
Standard version.

Part 275A – Spring Latch Set with Sash Chain, Keyed Alike
Designed for applications where compatible locks are required to operate with the same key arrangement.

If multiple doors are being equipped and matching-key operation is important, 275A is the appropriate version to consider.

Installation Notes

Proper alignment and adjustment are essential for reliable operation.

During installation:

• Mount the spring latches securely on both sides of the door

• Position the striker plates so the latches engage correctly

• Route the sash chain away from hinges, rollers, and other moving hardware

• Use the supplied S-hooks to connect the linkage securely

• Adjust the chain so both latches release properly

• Verify that both latches return to the locking position when released

• Test the system repeatedly before normal door operation

The exact mounting location can vary depending on the garage door construction and existing lock hardware.

Important for Automatic Garage Door Openers

Mechanical garage door locking systems must be fully disengaged before operating an automatic garage door opener.

Never activate an electric opener while the spring latches are engaged.

Operating the opener against a mechanically locked door can damage the:

• Garage door opener

• Door sections

• Vertical track

• Latches

• Lock hardware

• Hinges and other door components

If an automatic opener is installed, make sure the locking system is configured and operated appropriately for that application.

Safety

Always confirm that both spring latches have completely disengaged before opening the garage door.

Do not force the door if one side remains locked or if the latch mechanism binds.

Garage doors contain heavy moving components and may use springs and cables under significant tension. Repairs involving the door's counterbalance system should be performed only by individuals familiar with proper garage door service and safety procedures.