Main door lock-85105Ab

Product Description
The Main Door Lock Model 85105Ab is a premium, heavy-duty locking mechanism engineered specifically to provide maximum security for residential and commercial main entrance doors.
This lock, identified by its model number 85105Ab, is designed to meet the demanding security requirements of primary entry points, offering robust construction and reliable performance that withstands daily use and attempted forced entry.
Featuring a multi-point locking system, this main door lock engages at multiple points along the door frame when locked, distributing stress and preventing the door from being forced open at weak points.

Main door lock-85105Ab

The lock body is constructed from high-strength zinc alloy with a corrosion-resistant finish, ensuring longevity even when exposed to the elements on exterior doors.
Whether you are replacing an existing lock or securing a new door, the Main Door Lock Model 85105Ab delivers the peace of mind that comes with professional-grade security hardware.

What Type of Lock is the Model 85105Ab?
Understanding the lock mechanism is essential.
The Main Door Lock Model 85105Ab is typically a mortise lock or a multi-point locking system designed for main entrance doors.
Unlike simple cylindrical locks that secure at a single point, this lock incorporates a mechanism that extends multiple bolts or hooks into the door frame when the key is turned or the handle is lifted.
This multi-point engagement provides superior resistance against prying, kicking, and other forms of forced entry.
The 85105Ab model is specifically engineered to fit the standard preparation of aluminum and wooden main doors, making it a versatile replacement or new installation option.

Is This Lock Suitable for Aluminum or Wooden Doors?
Versatility is a key feature of the 85105Ab model.
The Main Door Lock Model 85105Ab is designed for compatibility with both aluminum and wooden main doors, which are the most common materials for entrance doors in many regions.
Its mounting configuration and dimensions are engineered to fit standard door preparations for these materials.
For aluminum doors, the lock integrates with the hollow profile, while for wooden doors, it mortises into the door edge.
This dual-material compatibility makes the 85105Ab a popular choice for contractors, builders, and homeowners who need a reliable lock that works across different door types without modification.

Main door lock-85105Ab

What Security Features Does This Lock Offer?
Security is the primary function of any main door lock.
The Main Door Lock Model 85105Ab incorporates several advanced security features:

1. Multi-Point Locking: Engages multiple bolts (typically 3-5 points) into the door frame, distributing force and preventing the door from being forced open.

2. Anti-Drill Cylinder: The key cylinder often includes hardened steel pins or plates that resist drilling attempts, a common method used by intruders to bypass locks.

3. Anti-Pick Pins: Internal pins are designed with security features like spool or mushroom shapes that make lock picking extremely difficult.

4. Reinforced Bolt Construction: The bolts themselves are typically made of hardened steel to resist cutting, sawing, and prying.
   These features combine to make the 85105Ab a formidable barrier against unauthorized entry.

How Do I Install the Main Door Lock Model 85105Ab?
Installation requires precision and the right tools.
Installing the Main Door Lock Model 85105Ab involves mortising the lock body into the edge of the door, installing the cylinder through the door face, and mounting the strike boxes on the door frame to receive the multi-point bolts.

For aluminum doors, this often involves working within the door’s profile and securing the lock with specialized screws.
For wooden doors, precise chiseling is required to create a flush fit for the lock body and face plate.
Due to the complexity of multi-point locks and the precision required for proper alignment, professional installation is highly recommended to ensure the lock functions smoothly and provides the intended level of security.

What Maintenance Does This Lock Require?
Proper maintenance ensures long-term reliability.
To keep your Main Door Lock Model 85105Ab operating smoothly for years, periodic maintenance is recommended.
This includes:

• Lubrication: Apply a graphite-based or PTFE (Teflon) lubricant to the key cylinder and moving bolt mechanisms annually.
  Avoid oil-based lubricants, as they can attract dust and gum up the mechanism over time.

• Cleaning: Wipe the exterior surfaces with a soft, damp cloth to remove dirt and grime.
  Avoid abrasive cleaners that could damage the finish.

• Tightening: Periodically check and tighten any visible screws on the face plate, strike plates, and handle fixtures to prevent loosening from daily use.

• Alignment Check: Ensure the door and frame remain properly aligned; if the door sags, the lock bolts may not engage correctly, requiring hinge adjustment.

What is the Finish and Aesthetic of the 85105Ab Model?
The Main Door Lock Model 85105Ab is designed to complement the appearance of modern entrance doors.
It typically features a clean, streamlined profile that suits contemporary architecture.

The finish is often a corrosion-resistant coating such as satin chrome, polished brass, or matte black, depending on the specific variant.
The handles (if included) are ergonomically designed for comfortable operation and are available in various styles to match different aesthetic preferences.
The lock’s appearance is intended to enhance, not detract from, the overall look of your main entry door.

Main door lock-85105Ab available in Mombasa, Kwale, Kilifi, Lamu, Mandera, Marsabit, Isiolo, Meru, Embu, Kitui, Machakos, Makueni, Nyandarua,

Nyeri, Kirinyaga, Murang’a, Kiambu, Turkana, Samburu, Trans Nzoia, Uasin, Gishu, Elgeyo Marakwet, Nandi, Baringo,

Laikipia, Nakuru, Narok, Kajiado, Kericho, Bomet, Kakamega, Vihiga, Bungoma, Busia, Siaya, Kisumu, Homa Bay, Migori, Kisii, Nyamira, Nairobi.

In Nairobi you can find them at: Westlands, Dagoretti,  Lang’ata, Starehe, Kamukunji, Embakasi, and Kasarani, Kibera, Mathare,

Eastleigh, Karen, Lavington, Westlands, Parklands, Runda, South C, South, Ngong Road

In Mombasa you can find us at : Nyali, Mwembe Tayari, Majengo, Likoni ,Bamburi, Miritini