Replacement Curtain End Lock | Legacy Rolling Steel Door Repair Part | Slat Alignment Hardware

Keep an older Cookson rolling steel door curtain properly aligned with the Cookson Legacy Slat End Lock, a replacement component designed for compatible legacy rolling-door curtain assemblies.

End locks are installed at the ends of rolling door slats to help keep the individual slats aligned as the curtain travels through the guides and coils around the barrel.

This replacement end lock is ideal for commercial door technicians repairing worn, damaged, missing, or loose curtain end locks on compatible Cookson Legacy rolling steel doors.

Key Features

• Designed for compatible Cookson Legacy rolling steel doors

• Replacement rolling door slat end lock

• Helps maintain proper curtain alignment

• Helps prevent excessive lateral slat movement

• Provides a bearing/loading surface within the door guides

• Helps support smooth curtain travel

• Ideal for rolling steel door repair and maintenance

• Commercial and industrial door application

• Suitable for replacement of worn or damaged end locks

• End lock only unless specifically stated otherwise

What a Rolling Door End Lock Does

Rolling steel door curtains are made from individual interlocking slats.

Cookson identifies curtain end locks as components attached to the ends of selected slats to:

• Maintain slat alignment

• Help prevent slats from shifting sideways

• Guide the curtain through the vertical guides

• Provide a loading surface between the curtain and guide assembly

• Help keep the curtain tracking properly

A missing or damaged end lock can allow excessive curtain movement and may contribute to poor tracking or additional slat damage.

Legacy Cookson Application

This component is intended for compatible older / legacy Cookson rolling steel door assemblies.

Cookson has produced many rolling-door configurations over the years, so replacement curtain components can vary according to:

• Door model

• Door age

• Slat profile

• Slat thickness

• Guide configuration

• Curtain construction

• End-lock style

Always compare the replacement end lock to the existing part before ordering.

Common Applications

Ideal for:

• Cookson rolling steel doors

• Legacy rolling service doors

• Commercial roll-up doors

• Warehouse doors

• Loading dock doors

• Industrial rolling doors

• Security doors

• Rolling door curtain repairs

• Preventive maintenance

• Commercial door service work

Replacement Applications

Replace the existing end lock when it is:

• Broken

• Cracked

• Bent

• Worn

• Missing

• Loose

• Damaged from curtain impact

• No longer keeping the slat aligned

Inspect adjacent slats and end locks whenever one damaged component is discovered.

Rolling Door Curtain Inspection

During service, inspect the curtain for:

• Bent slats

• Separated interlocks

• Missing end locks

• Damaged end locks

• Uneven curtain tracking

• Excessive lateral movement

• Guide damage

• Bottom-bar damage

Replacing damaged curtain components early can help prevent more extensive rolling-door repairs.

Product Specifications

Brand Compatibility: Cookson
Product Type: Slat End Lock
Application: Legacy Rolling Steel Door Curtain
Function: Slat Alignment / Curtain Guidance
Installation Location: End of Compatible Curtain Slat
Door Type: Commercial Rolling Steel Door
Use: Replacement / Repair / Maintenance

Important Compatibility Note

Cookson rolling steel doors use different slat and end-lock configurations depending on the model and generation of the door.

Before ordering, verify:

• Existing slat profile

• Existing end-lock shape

• Door model

• Door age

• Curtain construction

• Guide configuration

• Existing mounting method

Do not assume all Cookson rolling-door end locks are interchangeable.

What's Included

(1) Cookson Legacy Slat End Lock