Schlage Residential F51A Northbrook Lever Entry Lock with C Keyway

Schlage Residential F51A Northbrook Lever Entry Lock with C Keyway

Professional Residential Entry Lock Solution

The Schlage Residential F51A Northbrook Lever Entry Lock combines Grade 2 commercial-grade security with residential design aesthetics. This single cylinder entry lock features a 5-pin C keyway cylinder with dual backset compatibility for 2-3/8" or 2-3/4" installations, accommodating door thicknesses from 1-3/8" to 1-3/4". Constructed with zinc and steel components and certified to ANSI/BHMA A156.2-2017 Commercial Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA standards.

Professional Features & Benefits

• Door Thickness Compatibility: Accommodates 1-3/8" to 1-3/4" doors with dual backset options for 2-3/8" or 2-3/4" installations.
• Grade 2 Commercial Construction: Zinc and steel construction meets ANSI/BHMA A156.2-2017 Commercial Grade 2 standards for enhanced durability and security.
• Dual Certification Standards: ANSI/BHMA A156.2-2017 Commercial Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA certified with UL Listed option for 3-hour fire door applications.
• Universal Installation Design: Easy 3-step installation requires only a screwdriver with universal latch and dual backset compatibility.
• Professional Latch System: 1" x 2-1/4" latch with 1/4" radius corner faceplate, 7/8" housing diameter, and 1/2" throw for reliable latching performance.
• Keyed Entry Function: Single cylinder operation unlocks when door is opened from inside, with manual turnbutton override and exterior key control for convenient access management.
• Complete Hardware Package: Includes 16211 latch assembly and 10063 strike with 1-5/8" x 2-1/4" radius corner full lip design.
• Manufacturer Warranty: 10 Year warranty coverage for added confidence and long-term protection.

Standard Features

Certification: ANSI/BHMA A156.2-2017 Commercial Grade 2; ANSI/BHMA A156.39-2015 Residential Grade AAA; Available UL Listed for 3-hour fire door (F10, F40 (CSV Only), F51A, F80 functions).
Latch: 1"x 2-1/4", 1/4" radius corner faceplate, 7/8" housing diameter, 1/2" throw, circular drive-in included, universal latch
Strike: 1-5/8" x 2-1/4" radius corner, full lip, no box
Backset: Dual backset latches, fits either 2-3/8" or 2-3/4" backsets
Cylinder: 5-Pin, C keyway, keyed alike (KA4)
Door Range: 1-3/8" – 1-3/4"
Keys: Two per lock, 5-pin, C section

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/8" and 1-3/4", and determine appropriate backset (2-3/8" or 2-3/4").
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for the cylindrical lock installation.
3. Prepare door by drilling required holes per manufacturer specifications for the lock body, latch, and strike plate installation.
4. Install the 16211 latch assembly and 10063 strike plate, securing all mounting hardware per manufacturer torque specifications.
5. Install the lock mechanism and adjust the keyed cylinder and interior turnbutton for proper alignment and smooth operation.
6. Test lock operation from both interior and exterior sides to verify proper function of the keyed entry mechanism and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Residential Entry Doors
• Multi-Family Housing Units
• Apartment and Condominium Complexes
• Single-Family Home Security
• Residential Property Management
• Home Builder and Contractor Projects
• Residential Renovation and Upgrade Projects

Why Choose Schlage Residential Quality?

Schlage Residential F Series entry locks deliver professional-grade reliability with zinc and steel construction certified to both Commercial Grade 2 and Residential Grade AAA standards. The 10 Year warranty coverage and dual certification provide confidence in long-term performance. Engineered for demanding residential applications where dependable security and convenient operation are essential.

ANSI/BHMA Grade 2 rated mechanical knob or lever with solid brass construction and SecureKey re-keyable cylinder. Support Resources: Manuals Hub: Schlage Manuals, Installation Guides & Templates (https://www.schlage.com/en/home/support/installation-manuals-templates.html) || Installation Guides: F-Series Knob and Lever Installation Instructions (https://www.schlage.com/content/dam/sch-us/documents/pdf/installation-manuals/P515-302.pdf) || Door Prep Templates: F10/F40/F51 Knob and Lever Door Prep Template (https://www.schlage.com/content/dam/sch-us/documents/pdf/installation-manuals/P513-593.pdf) || FAQs & Support: Schlage Product FAQs (https://www.schlage.com/en/home/support/faqs.html)