Prime-Line U 11126 Door Reinforcement Lock 7.6 cm (3 in.) | Adds Extra Security to Swing-In Doors

• Ideal Use: Adds secondary security to swing-in doors to help resist forced entry, unauthorized access, and kick-in attempts
• Dimensions & Compatibility: Fits swing-in doors of virtually any thickness; some installations may require additional mortising for proper fit
• Materials & Components: Durable aluminum construction with bronze anodized finish; includes reinforcement lock and 3 in. hardened mounting screws
• Key Features: Spring-loaded, tamper-resistant design helps resist forced entry, lock picking, and lock bumping when engaged
• Fit Guidance: Requires pre-drilled 1/8 in. pilot holes for installation; compatible MP111268 finger pull sold separately for easier operation

• Select the desired height on your swing-in door (higher placement limits child access). Mark the lock's position and pre-drill 1/8-inch pilot holes for the included 3-inch hardened screws. Mortising may be required for some door types. — Prepare Door and Mark Position
• Align the reinforcement lock with the pilot holes and secure it firmly to the door using the provided hardened screws. Ensure a snug fit to maximize its resistance to forced entry. — Attach Reinforcement Lock
• Align the keeper plate with the lock mechanism on the door frame. Mark and pre-drill pilot holes, then securely attach the keeper using the remaining hardened screws. Ensure proper alignment for smooth operation. — Install Keeper on Door Frame
• Test the lock by closing the door and engaging the spring-loaded mechanism. Ensure it locks securely and disengages smoothly. Verify it withstands moderate pressure to confirm proper installation and security. — Engage and Test Lock

Typical situations where Prime-Line U 11126 Door Reinforcement Lock 7.6 cm (3 in.) | Adds Extra Security to Swing-In Doors helps — illustrative scenarios, not customer reviews.