1. Product Overview
The Prime-Line U 11325 Door Reinforcement Lock is designed to enhance home security by providing an additional layer of protection against forced entry. Constructed from durable aluminum with a brushed chrome finish, this lock is engineered to withstand significant force, helping to prevent doors from being kicked in. Its spring-loaded design allows for installation at a higher level, making it child-safe, and its tamper-resistant features protect against lock picking and bumping. This reinforcement lock is suitable for any swing-in door of any thickness.
2. Key Features
- High Security: Designed to withstand up to 800 lbs. of force, significantly increasing door security.
- Durable Construction: Made from aluminum with a brushed chrome finish for long-lasting performance.
- Easy Installation: Includes 3-inch hardened screws for quick and straightforward setup.
- Child-Safe Design: Can be installed at a higher position to prevent access by young children.
- Tamper-Resistant: Provides protection against lock picking and bumping when engaged.
- Versatile Application: Suitable for any swing-in door, regardless of thickness.
3. Installation Instructions
Before beginning installation, ensure you have the necessary tools: a drill with an 1/8-inch drill bit, a Phillips screwdriver, a pencil, a tape measure, and safety glasses. A chisel and hammer may be required for mortising if your door frame has tight clearance.
3.1. Determine Mounting Location
Select a location on the door frame for the lock. It is recommended to install the lock a minimum of 6 inches above the existing doorknob or deadbolt hardware for optimal security and child safety.
3.2. Test Fit and Mark
Close the door and hold the lock's mounting plate against the door jamb at your chosen height. Ensure the lock mechanism can freely engage and disengage. Use a pencil to mark the top and back edges of the mounting plate on the door jamb. If the lock fits snugly without needing to chisel, you can surface mount it. If the gap between the door and jamb is too tight, you may need to chisel out a recessed area 1/16-inch deep to allow the mounting plate to sit flush.
Image: Pre-drilling for the door reinforcement lock.
3.3. Pre-Drill Holes
With the mounting plate held firmly in place, use an 1/8-inch drill bit to pre-drill pilot holes for the screws. Start with one hole, typically the center of the oblong hole, to temporarily secure the lock. Important: Do not use a drill driver with a maximum torque setting to install the 3-inch screws, as this can strip or break the screw heads.
3.4. Install Screws
Install one of the shorter 3/4-inch screws into the pre-drilled hole to temporarily hold the lock. Close the door and test the adjustment to ensure the lock mechanism operates smoothly. Once satisfied with the alignment, pre-drill the remaining holes and install the three 3-inch hardened screws provided. These longer screws are crucial for anchoring the lock securely into the door frame, providing maximum resistance against forced entry.
Video: Detailed installation instructions for the Prime-Line Door Reinforcement Lock.
4. Operating Instructions
The Prime-Line U 11325 Door Reinforcement Lock is designed for simple and intuitive operation.
4.1. Locking the Door
To lock the door, ensure the door is fully closed. Pinch the lock from the top and bottom, then swing the lock mechanism towards the door frame until it clicks securely into the closed position. The lock should sit flush against the door frame, preventing the door from opening.
Image: Visual guide for locking and unlocking the door reinforcement lock.
4.2. Unlocking the Door
To unlock, pinch the lock from the top and bottom, pull it slightly away from the door frame, and then swing it open towards yourself until it is in the fully open position. The door can now be opened normally.
Video: Demonstration of operating the Prime-Line High Security Door Lock.
5. Maintenance
The Prime-Line U 11325 Door Reinforcement Lock requires minimal maintenance. Periodically check the screws for tightness and ensure the lock mechanism moves freely. Clean with a soft, damp cloth as needed. Avoid using abrasive cleaners or solvents that could damage the finish.
6. Troubleshooting
- Lock is difficult to engage/disengage: Check for any obstructions between the door and the frame. Ensure the mounting plate is flush with the door jamb. If necessary, re-adjust the mounting plate or consider mortising the door jamb for better clearance.
- Screws are loose: Tighten all mounting screws. If screws continue to loosen, consider using longer screws (up to 3 inches) to ensure they anchor into the wall stud behind the door frame.
- Door does not close properly after installation: Verify that the lock is not interfering with the door's closing path. Adjust the lock's position slightly if needed, or consider mortising the door jamb.
7. Product Specifications
| Feature | Detail |
|---|---|
| Model Name | Door Reinforcement Lock |
| Part Number | U 11325 |
| Brand | PRIME-LINE |
| Material | Aluminum |
| Color | Brushed Chrome |
| Finish Type | Brushed |
| Item Dimensions (L x W x H) | 1.5 x 3.81 x 6.44 inches |
| Item Weight | 5.9 ounces (0.37 Pounds) |
| Lock Type | Reinforcement Lock |
| Special Feature | Weather Resistant |
| Included Components | Reinforcement lock, fasteners |
| Mounting Type | Jamb mount |
| UPC | 049793113252 |
Image: Dimensional drawing of the U 11325 lock.
8. Warranty & Support
This product comes with a manufacturer's warranty. For specific warranty details or to inquire about product support, please refer to the packaging or visit the official PRIME-LINE website. For returns, Amazon offers a 30-day refund/replacement policy for this item.
Manufacturer: Prime-Line
Contact: For further assistance, please visit the PRIME-LINE Store on Amazon or their official website.
