Cylinder escutcheon PN OK-C4 door plate, model OK-C4, round keyhole cover

The PN OK-C4 cylinder escutcheon is a round keyhole cover designed to protect and finish the appearance around a cylinder lock on interior and exterior doors. This model provides a compact, circular profile that conceals the lock cylinder edge and reduces direct access to the keyhole, while maintaining compatibility with standard cylinder mounts. The escutcheon is suitable for use where a separate protective cover is required to improve the door's functional finish and to offer basic protection against dust and light mechanical contact.

Advantages

The PN OK-C4 escutcheon offers a clean, minimal round design that integrates with various door styles. Its form provides a discreet shield around the cylinder without altering the lock mechanism or requiring special mounting plates. The component is simple to install and aligns with standard cylinder lock dimensions, enabling straightforward replacement or retrofit on residential and light commercial doors. The escutcheon enhances the door’s finish while providing a physical barrier that helps keep debris and incidental contact away from the keyway.

Suitable for

• Residential interior and exterior doors with cylinder locks
• Light commercial doors where a separate cylinder cover is preferred
• Replacement or retrofit projects for existing cylinder-mounted locks
• Doors requiring a rounded, minimal escutcheon for aesthetic consistency

Key specifications

• Shape: round escutcheon designed for cylinder locks
• Function: covers and protects the keyhole area
• Compatibility: fits standard profile cylinder mountings
• Installation: surface-mounted or recessed depending on door preparation
• Use environment: suitable for residential and light commercial doors

How to use

Position the escutcheon over the cylinder so the keyhole aligns with the opening. Secure the escutcheon to the door using appropriate screws through the mounting points or into the prepared recess, ensuring it sits flush and the cylinder operates freely. Check that the key turns smoothly and that the escutcheon does not obstruct the cylinder or key insertion. For retrofit applications, remove the existing cover before fitting the PN OK-C4 and verify compatibility with the cylinder diameter and mounting holes.

Usage recommendations

Inspect the door and cylinder mounting before installation to confirm correct alignment and to avoid distortion of the escutcheon. Use corrosion-resistant screws if the escutcheon is installed on exterior doors or in humid environments. Regularly clean the external surface to prevent buildup of dirt around the keyway and periodically verify the mounting screws remain tight to ensure long-term stability.