Mortise lock LOB 442L CP — LOB mortise lock, model 442L, chrome plated finish

Mortise lock LOB 442L CP is a mortise-style door lock from LOB with a chrome plated finish. Designed for installation into a door pocket, this mechanism combines a spring latch and a deadbolt function to secure interior or exterior doors. The LOB 442L CP is intended for situations where a compact mortise lock provides robust mechanical operation and a chrome appearance that complements modern door hardware.

Advantages

The lock features a durable chrome plated surface that resists corrosion and provides a consistent visual finish. Its mortise configuration allows for a flush installation in a variety of door materials and thicknesses. The combination of latch and bolt functions delivers both everyday convenience and enhanced security when the deadbolt is engaged. Mechanical components are designed for repeated operation and stable alignment with standard strike plates.

Suitable for

• Residential entrance and interior doors where a mortise lock is preferred
• Commercial premises requiring a compact, mechanically reliable locking solution
• Doors where a chrome finish is desired to match other hardware
• Situations needing both latch convenience and deadbolt security

Key specifications

• Lock type: mortise lock with latch and deadbolt functions
• Finish: chrome plated
• Operation: mechanical latch retraction and separate deadbolt actuation
• Intended mounting: recessed installation into door leaf
• Compatibility: suitable for standard mortise cutouts and compatible with common strike plates and faceplates

How to use

Install the lock into a suitably prepared mortise pocket in the door following manufacturer guidelines and ensure correct alignment with the strike plate on the frame. The latch operates with standard lever or knob motion for routine opening and closing. Engage the deadbolt using the key or thumbturn (depending on your door hardware setup) to provide additional security. Regularly check that screws, strike plate, and faceplate remain tight and that the bolt operates smoothly.

Usage recommendations

For long-term performance, use hardware rated for the door thickness and material, verify alignment during installation, and lubricate moving parts occasionally with a light, non-residue lubricant. Inspect the chrome finish periodically and clean with a soft cloth and mild detergent to maintain appearance without abrasive cleaners.