Product Description

The 3/8″ Cylinder Blocking Collar provides a clean, finished installation around compatible mortise cylinders used on commercial aluminum storefront doors and other narrow-stile door applications.

The collar helps fill the space between the cylinder and the face of the door or lock trim while reducing exposed cylinder projection. Its solid construction provides added support and creates a professional appearance for new installations and replacement projects.

Available in Satin Chrome or Dark Bronze finish to coordinate with common commercial door hardware.

Key Features

• 3/8″-thick cylinder collar
• Designed for compatible commercial mortise cylinders
• Helps reduce excess cylinder projection
• Covers gaps around the cylinder opening
• Provides a clean, finished appearance
• Ideal for aluminum storefront and narrow-stile doors
• Suitable for new installations and replacement applications
• Available in Satin Chrome or Dark Bronze

Available Finishes

• Satin Chrome
• Dark Bronze

Product Specifications

Product Type: Cylinder Blocking Collar
Thickness: 3/8″
Application: Commercial Mortise Cylinder Installation
Door Types: Aluminum Storefront and Narrow-Stile Doors
Finish Options: Satin Chrome or Dark Bronze
Cylinder Included: No
Quantity: One Collar

Important Ordering Information

This listing includes the cylinder blocking collar only. The mortise cylinder, lock body, faceplate, and other door hardware are sold separately.

Verify the required collar thickness, cylinder diameter, door preparation, and finish before ordering.