Schlage Residential FC21 Plymouth Knob Passage/Privacy Cylindrical Lock Grade 2
Versatile Residential Door Lock Solution
The Schlage Residential FC21 Plymouth Knob combines passage and privacy functions in a single Grade 2 cylindrical lock designed for residential applications. This dual-function lock operates as passage by default and converts to privacy with the interior pushbutton, accommodating door thicknesses from 1-3/8" to 1-3/4" with dual backset options for 2-3/8" or 2-3/4" installations. ANSI/BHMA A156.2-2017 Grade 2 certified construction ensures reliable performance for residential use.
Professional Features & Benefits
- Door Thickness Compatibility: Accommodates 1-3/8" to 1-3/4" doors with dual backset latches fitting either 2-3/8" or 2-3/4" backsets for versatile installation options.
- Dual Function Operation: Passage is default function with privacy pushbutton conversion on interior side, plus emergency unlock capability from outside with small tool.
- Grade 2 Certification: ANSI/BHMA A156.2-2017 Grade 2 and ANSI/BHMA A156.39-2015 Residential Grade AAA certified for reliable residential performance.
- Easy Installation: Features simple 3-step installation process requiring only a screwdriver, with universal latch and dual backset compatibility.
- Professional Hardware Components: Includes 1" x 2-1/4" latch with 1/4" radius corner faceplate, 1-5/8" x 2-1/4" radius corner full lip strike, and circular drive-in latch.
- Fire Door Compatible: Available UL Listed for 90 minute fire door applications when required for code compliance.
- Manufacturer Warranty: 10 Year warranty coverage for added confidence and long-term protection.
- Stainless Steel Construction: Durable stainless steel substrate provides corrosion resistance and long-lasting performance in residential environments.
Standard Features
Certification:ANSI/BHMA A156.2-2017 Grade 2
ANSI/BHMA A156.39-2015 Residential Grade AAA
Available UL Listed for 90 minute fire door
Latch: 1"x 2-1/4", 1/4" radius corner faceplate, 1" housing diameter, 1/2" throw, circular drive-in included, universal latch
Strike: 1-5/8" x 2-1/4" radius corner, full lip
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
- Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/8" and 1-3/4", and select appropriate backset (2-3/8" or 2-3/4").
- Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for the cylindrical lock installation.
- Prepare door by drilling required holes per manufacturer specifications, ensuring proper alignment for smooth operation.
- Install the universal latch and strike hardware, securing all components per manufacturer torque specifications.
- Mount the lock assembly and test both passage and privacy functions, verifying the interior pushbutton converts from passage to privacy mode properly.
- Test emergency unlock function from exterior side and ensure interior knob releases privacy pushbutton as designed. Refer to manufacturer documentation for complete installation details and troubleshooting.
Professional Applications
- Residential Interior Doors
- Bedroom and Bathroom Privacy
- Hall and Closet Passage
- Multi-Family Housing Units
- Apartment and Condominium Buildings
- Single-Family Home Construction
- Residential Renovation Projects
Why Choose Schlage Residential Quality?
Schlage Residential FC21 locks deliver professional-grade reliability with stainless steel construction and Grade 2 ANSI/BHMA certification for demanding residential applications. The 10 Year warranty provides long-term protection and confidence in performance. Engineered with dual-function versatility and easy 3-step installation, this lock combines convenience with dependable security for residential door hardware needs.
Manufacturer Resources
Product Specs
- Series:
- F Series
- Subcategory:
- Bored Locksets
- Grade:
- Grade 2
- Warranty:
- 10 Year
- Standard Strike:
- 10-027: Full Lip Radius Strike, 2-1/4" x 1-5/8"
- Standard Latch:
- 16-600: Spring Latch, Dual Option (Round, Drive-in)
- Keyed Function:
- Non-Keyed
- Product Group:
- Mechanical Locks
- Product Subgroup:
- Bored Locksets
- Keyed:
- No
- Electronic:
- No
- Commercial/Residential:
- Residential
- Function Description:
- Passage is default function; Insert privacy pushbutton on interior side of lock to convert to privacy; Can be opened from outside with small emergency unlock too
- Lock Type:
- Cylindrical
- Product Type:
- Leversets
- Lock Function:
- Passage/Privacy
- Handle Design:
- Plymouth Knob
- Handle Type:
- Knob
- Product Attribute:
- Cylindrical Locks
- Product Model:
- FC21
- Product Function:
- Passage/Hall/Closet
- Door Hand Direction:
- Non-Handed
- Door Thickness Range:
- 1-3/8" to 1-3/4"
- Product Category:
- Mechanical Locks
- Product Substrate:
- Stainless Steel
- Department:
- Door Hardware