Achieve proper cylinder spacing and a clean finished installation with the COL11-26D 1/4" Cylinder Blocking Collar.

Designed for use with standard mortise cylinders and mortise thumbturn cylinders, this 1/4" spacer collar helps compensate when a cylinder projects too far from the lock, trim, or door surface.

The 26D / 626 Satin Chrome finish coordinates with common commercial locksets, exit-device trim, storefront hardware, and other architectural door hardware.

Key Features

• Model: COL11-26D

• Manufacturer: GMS

• 1/4" blocking collar

• Designed for standard mortise cylinders

• Compatible with mortise thumbturn cylinders

• Helps provide proper cylinder projection

• Useful for adjusting cylinder spacing

• Creates a clean, professional finished appearance

• 26D / 626 Satin Chrome finish

• Ideal for commercial door and storefront hardware

• Simple solution for cylinder-length and trim-spacing applications

Dimensions

Thickness / Depth: 1/4" (.25")
Inside Diameter: Approximately 1.17"
Outside Diameter: Approximately 1.39"

The collar slides over a compatible mortise cylinder to provide additional spacing between the cylinder head and the mounting surface.

What Is a Blocking Collar Used For?

Mortise cylinders are available in several lengths, and the correct cylinder must project far enough to operate the lock without extending excessively from the door or trim.

A blocking collar can be used to take up excess cylinder length and help achieve the proper installed position.

Common applications include:

• Mortise locks

• Storefront deadlocks

• Storefront deadlatches

• Exit-device trim

• Key switches

• Electrified door controls

• Access-control hardware

• Commercial lock applications

1/4" Spacer

The COL11 provides approximately 1/4" of additional spacing.

GMS also manufactures blocking collars in other thicknesses, making it possible to select a spacer that best matches the cylinder and hardware configuration.

26D Satin Chrome Finish

The US26D / 626 Satin Chrome finish provides a clean commercial appearance and coordinates with many common satin-chrome and satin-stainless door hardware finishes.

Product Specifications

Brand: GMS
Model: COL11-26D
Product Type: Cylinder Blocking Collar / Spacer Ring
Thickness: 1/4"
Inside Diameter: Approximately 1.17"
Outside Diameter: Approximately 1.39"
Cylinder Type: Standard Mortise Cylinder
Thumbturn Compatibility: Mortise T-Turn Cylinders
Finish: 26D / 626 Satin Chrome
Application: Commercial Lock & Door Hardware

Important Ordering Information

This listing is for the blocking collar only.

Mortise cylinder, lock body, keys, cams, thumbturn, and other door hardware are not included unless specifically stated.

Always verify the amount of spacing required before ordering. A blocking collar should provide proper cylinder projection without interfering with cylinder operation.