Schlage Residential FC21 Caine...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$180.00
$137.32
Schlage Residential FC21 - Caine Glass Knob Passage and Privacy Latch - Grade 2 Cylindrical Non-Keyed Lock

Schlage Residential FC21 Caine Glass Knob Passage and Privacy Cylindrical Lock Grade 2

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Model: FC21-CAN-619-KIN
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$180.00
$137.32
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Schlage Residential FC21 Caine Glass Knob Passage/Privacy Cylindrical Lock Grade 2

Dual-Function Residential Lock with Easy Installation

The Schlage Residential FC21 Caine Glass Knob combines passage and privacy functions in a single Grade 2 cylindrical lock. This dual-function lock operates as passage by default and converts to privacy with the interior pushbutton. Designed for doors 1-3/8" to 1-3/4" thick with dual backset compatibility for 2-3/8" or 2-3/4" installations. Features ANSI/BHMA A156.2-2017 Grade 2 certification and available UL listing for 90-minute fire doors.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates doors from 1-3/8" to 1-3/4" thick for versatile residential applications.
  • Dual Backset Design: Universal latch fits either 2-3/8" or 2-3/4" backsets without modification for flexible installation.
  • Grade 2 Construction: ANSI/BHMA A156.2-2017 Grade 2 certified with stainless steel substrate for reliable residential performance.
  • Dual Function Operation: Passage is default function with privacy conversion via interior pushbutton, plus emergency unlock capability from exterior.
  • Fire Door Compatible: Available UL Listed for 90-minute fire door applications when code compliance is required.
  • Easy Installation: 3-step installation process requires only a screwdriver with included universal latch and full lip strike.
  • Manufacturer Warranty: 10 Year warranty coverage for added confidence and protection.
  • Professional Hardware Components: Includes 1" x 2-1/4" latch with 1/4" radius corner faceplate and 1-5/8" x 2-1/4" radius corner strike.

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

  1. Review manufacturer specifications and verify door preparation requirements including door thickness between 1-3/8" and 1-3/4" and backset measurement of either 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 using the 3-step installation process.
  4. Install the universal latch and full lip strike hardware, securing all components per manufacturer torque specifications.
  5. Adjust operational components for proper alignment and smooth knob operation, testing both passage and privacy functions.
  6. Test device operation to verify proper function including privacy pushbutton engagement and emergency unlock capability. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Interior Doors
  • Hall and Closet Applications
  • Bedroom and Bathroom Privacy
  • Multi-Family Housing Units
  • Apartment and Condominium Buildings
  • Single-Family Home Construction
  • Residential Renovation Projects

Why Choose Schlage Residential Quality?

Schlage Residential F Series locks deliver professional-grade reliability with stainless steel construction and Grade 2 ANSI/BHMA certification for demanding residential applications. The 10 Year warranty provides added confidence for long-term performance. Engineered with dual-function capability 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:
Knobsets
Lock Function:
Passage/Privacy
Handle Design:
Caine 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 Substrate:
Stainless Steel
Product Category:
Mechanical Locks
Department:
Door Hardware

Schlage Residential FC21-CAN-619-KIN – Frequently Asked Questions

1) Can the Schlage FC21 Caine knob be used as both a hall/closet passage knob and a bathroom privacy knob?
Yes, that is the point of the FC21. It ships working as passage, and you insert the privacy pushbutton on the interior side to convert it to privacy. Once converted, it can still be released from the outside with the small emergency unlock. For a property manager buying for a whole building, that means one part number covers hall, closet, bedroom and bath openings instead of stocking two.
2) Will the Schlage FC21 knob fit a 1-3/8 inch interior door, or only a 1-3/4?
Both. The FC21 covers doors from 1-3/8 inches to 1-3/4 inches, so older interior doors and standard 1-3/4 inch doors both work with no adapter.
3) My existing doors are bored at 2-3/4 inch backset, not 2-3/8. Do I have to order a different latch?
No. The FC21 comes with a dual backset latch that fits either 2-3/8 inch or 2-3/4 inch prep with no modification, so a single order covers a building with mixed bores. The latch supplied is the 16-600 spring latch, which can be used as a round faceplate latch or as a drive-in.
4) Will this latch into the strike already mortised into my jamb?
The FC21 latch has a 1/2 inch throw with a 1 x 2-1/4 inch faceplate cut with 1/4 inch radius corners, and the supplied strike is a 2-1/4 x 1-5/8 inch full lip radius strike. If your existing prep is radius corner at those dimensions, it drops in. Square corner prep or a T-strike pocket will need the mortise re-cut or a plate swap.
5) My door is thicker than 1-3/4 inches - which knob locks cover it instead of the FC21?
The FC21 Caine covers doors 1-3/8 inch to 1-3/4 inch thick. For thicker doors, the Corbin Russwin CK4310 Grade 1 passage/closet lock and CK4851 entrance/office lock cover 1-3/8 inch to 2 inch, the Falcon X101 Grade 1 passage knobset covers 1-3/8 inch to 2-1/4 inch, and the Deltana 6171 Round Knob and 6112 St. Thomas Knob cover 1-3/8 inch to 2 inch in entry and privacy functions respectively.
6) What is a comparable Grade 2 non-keyed passage knob if the Schlage FC21 Caine glass knob is not the right look?
The Dexter C2000 Series passage knob is a Grade 2 cylindrical ball knob, non-keyed, for doors 1-3/8 inch to 1-3/4 inch thick, which matches the FC21 Caine on grade, non-keyed passage function and door thickness range while using a plain ball knob instead of a glass knob. Corbin Russwin CK4410 is another Grade 2 non-keyed passage/closet cylindrical lock with a Global knob for the same 1-3/8 inch to 1-3/4 inch door range.
7) I need a dedicated privacy knob rather than the convertible FC21 Caine - what are the options?
The FC21 Caine is passage by default and converts to privacy with an interior pushbutton, so a single part covers both. If you want a knob that is privacy only, the Dexter C2000 Series privacy knob is a Grade 2 non-keyed privacy/bed/bath cylindrical ball knob for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal BER20 is a Grade 3 privacy knob with brass trim for the same door range. Baldwin 5077 Bethpage is a privacy knob on an R027 rose for a traditional look.
8) For a commercial corridor rather than an apartment interior, what heavier passage knob should I use instead of the Schlage FC21?
The FC21 Caine is a residential Grade 2 knobset. Where a heavier specification is called for, the Falcon X101 is a Grade 1 heavy duty cylindrical passage knobset with interchangeable core, fire rated, for doors 1-3/8 inch to 2-1/4 inch, and the Corbin Russwin CK4310 is a Grade 1 non-keyed passage/closet cylindrical lock for 1-3/8 inch to 2 inch doors. Falcon W101 sits between them as a Grade 2 medium duty, fire rated passage/closet knob lock with a 2-3/4 inch backset.
9) Will a Schlage A170 work in place of the FC21 Caine knob lock?
No. The A170 is single dummy trim, a Grade 2 non-keyed knob with no latch operation, used on a fixed or inactive leaf. The FC21 Caine is a functioning cylindrical passage/privacy lock with a latch and strike. Other dummy-only knobs that are sometimes mistaken for working passage sets include the BEST 6K single dummy trim, Cal-Royal BA40 dummy knob and Bravura Biloxi dummy knobset.
10) Do I need to worry about left or right hand when ordering the FC21 Caine knob?
No handing to specify. The FC21 is non-handed, so the same lock works on a left or right hand door. Just note which side is the interior when you install, since the privacy pushbutton goes on the inside.
11) What latch and strike come in the box with the Schlage FC21, and do I need to buy anything else?
The set includes the 16-600 spring latch (1 x 2-1/4 inch faceplate with 1/4 inch radius corners, 1 inch housing, 1/2 inch throw, drive-in collar included) and the 10-027 full lip radius strike at 2-1/4 x 1-5/8 inches. Installation is a screwdriver job. Nothing further is required for a standard bored door; only the mounting screws already supplied.
12) Is the Schlage FC21 rated well enough for apartment turnovers and multi-family interior doors?
It carries ANSI/BHMA A156.2-2017 Grade 2 certification plus A156.39-2015 Residential Grade AAA, with a stainless steel substrate. That is the usual level for interior doors in apartments, condos and single-family work. For a heavy-traffic commercial corridor a Grade 1 cylindrical knob such as the Corbin Russwin CK4310 passage lock would be the step up.
13) Can I use the FC21 Caine knob on a 90-minute fire rated door?
It is available UL Listed for 90 minute fire door applications. If your inspector is looking at a labeled opening, specify the UL listed version when you order rather than assuming the stock configuration carries it.
14) What is a simpler alternative if I only need a plain passage knob and don't want the privacy option?
Several single-function passage knobs cover that. The Dexter C2000 Grade 2 passage knob and the Corbin Russwin CK4410 Grade 2 passage/closet knob both fit 1-3/8 to 1-3/4 inch doors, the Arrow MK01 and RK01 are Grade 2 passage knobs in the same thickness range, and the Pamex FTF Baron is a Grade 3 passage option. The FC21 is worth it only if you want one part that can be either passage or privacy.
15) I need a keyed knob for the same doors I am putting FC21 Caine knobs on - what pairs with it?
The FC21 Caine is non-keyed. For keyed openings on the same 1-3/8 inch to 1-3/4 inch doors, the Dexter C2000 Series entry/office knob is Grade 2 and keyed, and the Cal-Royal BER00 is a Grade 3 entrance/office knob lock with a Kwikset keyway. Corbin Russwin CK4851 is an entrance/office cylindrical lock with a conventional cylinder and Global knob for 1-3/8 inch to 2 inch doors.
16) What is a simpler passage knob than the Schlage FC21 Caine for a basic closet door?
Where the privacy conversion is not needed, the Pamex FTF Baron knob lockset is a Grade 3 passage knob for doors 1-3/8 inch to 1-3/4 inch, and the Arrow MK01 and RK01 are Grade 2 non-keyed passage cylindrical knob locks for the same door range, the RK01 with a ball knob. Bravura Albany and Lynchburg are Grade 2 passage knobsets with round trim.
17) The FC21 Caine glass knob will not suit a decorative traditional interior - what else gives a decorative knob on a working latch?
The FC21 Caine uses a glass knob on a choice of rose designs. For a traditional decorative alternative on a functioning latch, the Baldwin Estate 5011 Colonial passage knob with 5058 rose and the Baldwin Estate 5000 Baltimore passage knob with 5048 rose and full lip strike both serve passage openings, and the Omnia 434/PA egg-shaped knob latchset is a passage set in solid brass. Emtek porcelain knobs and Emtek crystal Georgetown and Providence knobsets are decorative but dummy pairs, not latching sets.
18) Is a Kwikset 200P Polo passage knob the same thing as the Schlage FC21 Caine?
Both serve interior hall and closet openings, but they are different products. The Kwikset 200P Polo is a passage knob supplied with a 6AL latch and RCS round corner strike, and the 200P-CP version comes with a round corner adjustable latch. The FC21 Caine is a Grade 2 cylindrical set that is passage by default and converts to privacy with an interior pushbutton, supplied with a 16-600 dual-option spring latch and a 10-027 full lip radius strike measuring 2-1/4 inches by 1-5/8 inches.
19) Which knob locks should I look at instead of the FC21 Caine when the opening needs storeroom or classroom security?
The FC21 Caine is a non-keyed passage/privacy set and does not secure an opening with a key. For storeroom duty, the Sargent 6G04 is a Grade 2 storeroom/closet knob lock with a single cylinder and the Sargent 8XG04 is a Grade 1 heavy duty storeroom/closet knob lock with a 2-3/4 inch backset. For classroom function, the Dexter C2000 Series classroom knob is Grade 2, keyed, for doors 1-3/8 inch to 1-3/4 inch.
20) What finishes and rose styles does the Caine glass knob come in?
Two finishes, 619 Satin Nickel and 622 Matte Black, each offered with ten rose designs: Camelot, Century, Collins, Dalton, Grandville, Greene, Howe, Indy, Kinsler (standard) and Upland. Twenty combinations total, which lets you match the rose already used on other openings in the unit while keeping the same lock function.
21) I need a matching knob on a closet door that doesn't latch. Is there a dummy version?
The FC21 is a functioning latch set, not a dummy. For a non-latching closet or false door, use a single dummy trim such as the Schlage A170 Grade 2 dummy knob (1-3/8 to 1-7/8 inch doors), the BEST 6K single dummy trim, or a Bravura Biloxi Grade 2 dummy knobset.
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Can I return it if it doesn’t work for me?
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Does the Schlage Residential FC21-CAN-619-KIN come with a warranty?
Absolutely. The Schlage Residential FC21-CAN-619-KIN is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Schlage Residential FC21-CAN-619-KIN?
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