Schlage Residential FC21 Alexa...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$180.00
$123.22
Schlage FC21 - Alexandria Glass Knob by Hobson Glass Knob Passage and Privacy Lock

Schlage Residential FC21 Alexandria Glass Knob by Hobson Glass Knob Passage and Privacy Cylindrical Lock

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Model: FC21ALXCAM622HOBCAM
$180.00
$123.22
Selected Finish is
Selected Rose Design for Alexandria Knob is
Selected Rose Design for Hobson Knob is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$180.00
$123.22
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Schlage Residential FC21 Alexandria Glass Knob by Hobson Glass Knob Passage and Privacy Cylindrical Lock

Dual-Function Residential Lock with Designer Glass Knob Styling

The Schlage Residential FC21 Alexandria Glass Knob by Hobson Glass Knob combines elegant designer styling with versatile dual-function operation for residential applications. This Grade 2 cylindrical lock accommodates door thickness from 1-3/8" to 1-3/4" with dual backset options of 2-3/8" or 2-3/4". The lock features a 1" x 2-1/4" latch with 1/2" throw and includes both passage and privacy functionality in a single unit.

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.
  • Dual-Function Operation: Passage is default function with privacy pushbutton conversion on interior side for versatile residential use.
  • Emergency Access Feature: Privacy function can be opened from outside with small emergency unlock tool for safety and convenience.
  • Professional-Grade Construction: Stainless steel substrate with Grade 2 certification provides reliable performance for residential applications.
  • Universal Installation: Dual backset latches fit either 2-3/8" or 2-3/4" backsets with easy 3-step installation requiring only a screwdriver.
  • Complete Hardware Package: Includes 1" x 2-1/4" latch with 1/4" radius corner faceplate, circular drive-in, and 1-5/8" x 2-1/4" radius corner full lip strike.
  • Designer Glass Styling: Alexandria Glass Knob by Hobson Glass Knob design provides elegant residential aesthetics.
  • Manufacturer Warranty: 10 Year warranty coverage for added confidence and protection.

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 select 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 dual backset latch system.
  4. Install the spring latch assembly and secure the cylindrical lock components to door per manufacturer torque specifications.
  5. Adjust operational components for proper alignment and smooth knob operation, ensuring privacy pushbutton functions correctly.
  6. Test device operation including passage function, privacy conversion, and emergency unlock capability. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Residential Interior Doors
  • Bedroom and Bathroom Privacy Applications
  • Hall and Closet Passage Functions
  • Multi-Family Housing Units
  • Residential Renovation Projects
  • Custom Home Construction
  • Property Management Applications

Why Choose Schlage Residential Quality?

Schlage Residential FC21 cylindrical locks deliver professional-grade reliability with stainless steel construction and Grade 2 certification for demanding residential applications. The dual-function design with emergency unlock capability provides both convenience and safety for homeowners. Backed by a comprehensive 10 Year warranty, this lock is engineered for dependable performance in residential environments where reliable operation is essential.

Manufacturer Resources

Product Specs

Series:
FC 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
Product Function:
Passage/Hall/Closet
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:
Alexandria Knob x Hobson Knob
Handle Type:
Lever and Knob
Lever/Knob Design:
Alexandria Knob x Hobson Knob
Product Attribute:
Cylindrical Locks
Product Model:
FC21
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 FC21ALXCAM622HOBCAM – Frequently Asked Questions

1) Is the Schlage FC21 a passage lock or a privacy lock?
Both, in one box. Out of the carton the FC21 works as a passage set, latching but never locking. Insert the privacy pushbutton on the interior knob and it becomes a privacy lock for a bedroom or bath. If someone gets locked in, it can be released from the outside with the small emergency unlock tool. That means you can stock one part number for hall, closet, bedroom and bath openings in the same unit.
2) Does the FC21 glass knob take a key?
No. The Alexandria glass knob set is non-keyed, with no cylinder and no keyway. Privacy comes from the interior pushbutton only. For an exterior or lockable door you need a keyed entry or storeroom function instead, such as the Cal-Royal AG00 entrance lever in a 6-pin Schlage C keyway, or the Hager 2580 Grade 2 storeroom lock.
3) Do I need to know the handing before ordering the FC21 knob set?
No. The FC21 is non-handed, so the same set goes on a left or right hand door. Order by finish and rose design, not by swing. Compare that to something like the Baldwin Estate 5103 half dummy, which is ordered as a specific left hand or right hand part.
4) Will the FC21 latch drop into my existing door prep and strike?
In most cases yes on a standard residential bore. The latch face is 1 x 2-1/4 inches with a 1/4 inch radius corner and a 1 inch housing diameter, and a circular drive-in collar is included for doors bored without a face mortise. Throw is 1/2 inch. The strike supplied is a 1-5/8 x 2-1/4 inch radius corner full lip. If your frame is cut for a square corner strike or a different strike size, that jamb will need re-prepping.
5) What do I actually have to choose when ordering the FC21 Alexandria glass knob?
Three things. Finish, either 619 Satin Nickel or 622 Matte Black. The rose design under the Alexandria knob, and separately the rose design under the Hobson knob. Both rose choices offer Camelot, Century, Collins or Kinsler, and they can be mixed, so you can run one rose on the corridor side and another inside the room. That is 32 orderable combinations in all. Backset is not an ordering choice, the latch handles 2-3/8 and 2-3/4.
6) I need a matching privacy knob for the bath and a passage knob for the hall closet. Do I order two different parts?
No, one part covers both. Because the FC21 ships as passage and converts to privacy with the pushbutton, you can buy the same set for every interior door on the unit and decide door by door at install. Keep the finish and rose design consistent across the run and the whole floor matches. If you want a non-functioning knob on one leaf of a closet pair, that is a dummy and a different part, such as the Callan Bentley Grade 2 dummy.
7) Will the FC21 work on a 2 inch thick door?
No. The FC21 tops out at 1-3/4 inches. For a thicker door you need a set rated past that, for instance the Hager 2510 Grade 2 passage lever at 1-3/8 to 2 inches, the Falcon K101 at 1-3/8 to 2-1/4 inches, or the Dexter C1000 series at 1-3/8 to 2 inches.
8) What is the closest Grade 2 non-keyed alternative to the Schlage FC21 for a residential hall or closet door?
The Schlage FC21 is a Grade 2 non-keyed cylindrical lock whose default function is passage, so the nearest peers by grade and function are the Accentra 5301LN Augusta, a Grade 2 cylindrical lever lock in passage/closet function, and the Arrow GL01, a Grade 2 non-keyed passage cylindrical lock with the Sierra lever. The main difference is trim: the FC21 is a knob set, Alexandria Knob by Hobson Knob, while both of those are lever sets. The Arrow GL01 is also built for a 1-3/4 inch to 2 inch door, where the FC21 covers 1-3/8 inch to 1-3/4 inch, so check the door thickness before swapping.
9) I need a bedroom or bathroom lock that is privacy only, not a convertible passage set. What should I order instead of the FC21?
The FC21 ships as passage by default and converts to privacy when the pushbutton is inserted on the interior side, which means the privacy behavior depends on how the set is assembled. If you want a lock that is privacy and nothing else, the Kwikset 300BRNL Breton is a Grade 3 privacy lever set covering 1-3/8 inch to 1-3/4 inch doors, the same door range as the FC21, and the Hager 2540 is a Grade 2 privacy cylindrical lock with the Withnell lever for 1-3/8 inch to 2 inch doors. Both are dedicated privacy trim rather than a dual-function set.
10) The FC21 is non-keyed. What do I use on the same door if the opening needs a key?
The FC21 is a non-keyed lock, so an opening that has to lock with a key needs a different lockset. The Cal-Royal AG00 is a Grade 2 entrance lever with a 6-pin Schlage C keyway keyed different on a 2-3/8 inch backset for 1-3/8 inch to 1-3/4 inch doors, and the Cal-Royal AG05 is a Grade 2 storeroom lever with a deadlocking latchbolt over the same 1-3/8 inch to 1-3/4 inch door range. Both match the FC21 door range, so the door prep carries over.
11) The FC21 is Grade 2 residential. What is the heavy duty equivalent for a commercial corridor door?
The FC21 is a Grade 2 lock listed for residential use, which suits interior doors in a home or apartment unit. For a commercial corridor with continuous traffic, the Falcon K101 is a Grade 1 heavy duty passage cylindrical lock with non-handed levers, fire rated, covering 1-3/8 inch to 2-1/4 inch doors; the Falcon T101 is a Grade 1 heavy duty passage lever with pressure release technology; and the Corbin Russwin CL3110 is a Grade 1 vandal resistant passage/closet lever lock, fire rated, for 1-3/4 inch to 2 inch doors. All three are levers rather than knobs.
12) My door has a 1-3/4 inch to 2 inch thickness. Which passage locks fit that when the FC21 does not?
The FC21 covers 1-3/8 inch to 1-3/4 inch doors, so a door above 1-3/4 inch is outside its range. The Arrow GL01, a Grade 2 non-keyed passage cylindrical lock with the Sierra lever, is built for 1-3/4 inch to 2 inch doors, and the Corbin Russwin CL3110 Grade 1 passage/closet lever covers the same 1-3/4 inch to 2 inch band. If the door falls anywhere from 1-3/8 inch to 2 inch, the Hager 2510 Grade 2 passage lever with the Withnell design spans that full range.
13) ADA lever requirements rule out a knob on this door. What passage lever matches the FC21 grade?
The FC21 uses a knob on both sides, Alexandria Knob by Hobson Knob, so an opening that requires a lever needs different trim. Staying at Grade 2 passage function, the options are the Accentra 5301LN Augusta of the 5300 series, the Accentra 4601LN with Augusta trim of the 4600 series, the Falcon B101 medium duty non-handed passage lever of the B series, the Design Hardware J75 flat lever for 1-3/4 inch doors, and the Hager 2510 with the Withnell design for 1-3/8 inch to 2 inch doors. The FC21 is non-handed, and the B101 and the K101 are non-handed as well, so handing does not have to be called out on the order.
14) The FC21 is available UL listed for a 90 minute fire door. Which alternatives carry a fire rating?
Among the passage and privacy alternatives, the Falcon K101 Grade 1 passage lock is fire rated and covers 1-3/8 inch to 2-1/4 inch doors, the Corbin Russwin CL3110 Grade 1 passage/closet lever is fire rated for 1-3/4 inch to 2 inch doors, and the Arrow MK02-TA privacy knob lock is fire rated for 1-3/4 inch to 2 inch doors. The FC21 is certified to ANSI/BHMA A156.2-2017 Grade 2 and A156.39-2015 Residential Grade AAA and is available UL listed for a 90 minute fire door, so confirm the fire rated build is what you are ordering when the opening is rated.
15) Can I put the Schlage FC21 glass knob on a fire rated door?
A UL Listed option for a 90 minute fire door is available on the FC21. Confirm the fire listed version is what you are specifying, because it is an option rather than standard on every configuration. If the opening also needs a lever rather than a knob for accessibility, the FC21 knob is not the part for it.
16) Is a Grade 2 knob lock enough for apartment turns and rental units?
The FC21 carries ANSI/BHMA A156.2-2017 Grade 2 and A156.39-2015 Residential Grade AAA, with a stainless steel substrate. That is the middle commercial grade and the top residential grade, which suits interior bedroom, bath, hall and closet doors in multi-family and rental stock. For a corridor or a high-traffic common area where you want Grade 1, look at a heavy duty passage lever like the Falcon K101 or the Corbin Russwin CL3110.
17) What comes in the box with the FC21, and what else do I need to buy?
You get the knob set both sides, the 16-600 dual option spring latch with the circular drive-in collar, and the 10-027 full lip radius strike. Installation is a screwdriver job on an already bored door. Nothing else is required unless the door is not yet bored, in which case you need a lock installation kit, or unless your jamb takes a different strike shape than the radius corner full lip supplied.
18) What is the difference between a glass knob passage set like the FC21 and a commercial passage lever?
The FC21 is a residential cylindrical knob with decorative glass knobs, made for interior doors in homes and apartments where appearance carries weight. A commercial passage lever, for example the Falcon B101 Grade 2 or the Accentra 5301LN Augusta, is built for a lever pull and heavier cycle duty in corridors and offices. Knobs also do not satisfy openings where a lever is required for accessibility. Pick the FC21 for a bedroom, bath, hall or closet where the look matters; pick a lever set for a commercial corridor.
19) Is there a plainer or lower cost alternative to the FC21 glass knob for the same passage function?
If the glass knob styling is not the point, the Kwikset 200BRNL Breton passage lever is a Grade 3 residential set covering the same 1-3/8 to 1-3/4 inch door range, and the Kwikset 300BRNL Breton is its privacy match. Note those are two separate parts for the two functions, where the FC21 handles passage and privacy in one, and the FC21 sits a grade higher at Grade 2.
20) I ordered a dummy set expecting it to work like the FC21. Why does it not latch?
A dummy is trim only, with no latch and no operating function, so it will not replace the FC21, which is a cylindrical passage and privacy lock with a spring latch. The Baldwin Estate 5103 is sold as a passage lever, a privacy lever, and separately as left hand and right hand half dummy levers, all with the 5048 rose; the Accentra 455LN Augusta, the BEST 9K 1DT, the BEST 7KC 1DT, the Callan Bentley BN5051, and the Emtek Arts and Crafts and Cortina pairs are all dummy function as well. Order dummy trim only for a fixed inactive leaf, and order a passage or privacy set for a door that has to latch.
21) Which knob locks compare to the Schlage FC21 rather than the lever sets?
Most cylindrical passage alternatives are lever sets, but a few carry knob trim like the FC21. The Arrow MK02-TA is a privacy cylindrical lock with a Tudor knob, non-keyed, fire rated, for 1-3/4 inch to 2 inch doors, and the Arrow HK11-BB is an entrance cylindrical lock with a ball knob and a conventional cylinder for 1-3/8 inch to 1-3/4 inch doors. Both are single-function locks, where the FC21 is a passage set that converts to privacy with the pushbutton and can be released from outside with a small emergency unlock tool.
22) Is a keypad lock a substitute for the FC21 on an interior door?
No. The FC21 is a mechanical, non-electronic cylindrical lock with a knob on each side. Code-entry products work differently: the Delaney LP250 is a Grade 2 electronic keypad leverlock, the Emtek Classic Keypad Leverset is a keypad lever, and the Lockey 1150 is a heavy duty mechanical keypad lever set with double combination in passage function for 1-1/8 inch to 2 inch doors. Those are for openings where you want coded access; a bedroom, bathroom, hall, or closet door that only needs to shut and give occupancy privacy is what the FC21 is built for.
23) For a rental unit standardization, is a Grade 3 passage set a step down from the FC21?
The FC21 carries a Grade 2 rating on a stainless steel substrate. The Grade 3 passage options are the Kwikset 200BRNL Breton passage lever set for 1-3/8 inch to 1-3/4 inch doors, which is the same door range as the FC21, and the Callan Asheville AH5011 passage leverset in a satin nickel finish. Satin nickel is also one of the two finishes the FC21 comes in, 619 satin nickel and 622 matte black, so a mixed order can still read consistently across a unit.
24) What should I use on the entry door if the FC21 is going on the interior doors?
The FC21 is non-keyed and intended for interior openings, so an exterior or unit entry door needs a keyed set. The Hager 2525 is a Grade 2 commercial cylindrical entry lock with a lever handle for 1-3/8 inch to 2 inch doors, the Falcon B511CP6D is a Grade 2 medium duty entry/office cylindrical lever, and the Callan Bennett BN3001R is a Grade 3 entrance leverset with a deadbolt combo. Pairing the entry set with FC21 knobs inside is a normal split, since the two doors answer different requirements.
25) Can I order a Kwikset 200DL Delta passage lock as a drop-in for the FC21?
They are both non-keyed interior passage locks, but the latch and strike hardware differ. The FC21 includes the 16-600 dual option spring latch, round and drive-in, with the 10-027 full lip radius strike at 2-1/4 inch by 1-5/8 inch. The Kwikset 200DL Delta passage lever ships with an adjustable 6AL latch and RCS strike, and the 200DL-RCALFD version comes with a round corner adjustable 20 minute UL latch and a round corner strike. If the existing frame is prepped for a radius strike, confirm which corner style the replacement carries before it goes on the door.
26) I need a lock for a utility or institutional room, not a bedroom. Is the FC21 the wrong choice?
The FC21 is a residential passage and privacy lock, so it fits bedroom, bathroom, hall, and closet doors. A utility or institutional room where a person must not be able to lock themselves in calls for asylum function instead: the Arrow MK33-BD-CS is a Grade 2 heavy duty asylum lock with a ball knob and a conventional cylinder in the Schlage C keyway, and the Dexter C1000 F87 is a Grade 1 asylum cylindrical lock for 1-3/8 inch to 2 inch doors. Both operate by key on both sides rather than a privacy pushbutton.
27) Is the FC21 an electronic or keypad lock?
No, the FC21 Alexandria glass knob is fully mechanical, with no battery, wiring or code entry. If you want keyless code access on an interior or unit door, that is a different product, such as the Delaney LP250 electronic keypad leverset or the Emtek Classic keypad leverset.
28) The FC21 has decorative glass knobs. What other designer trim options compare?
The FC21 pairs an Alexandria glass knob with a Hobson glass knob and lets you specify the rose for each side from Camelot, Century, Collins, and Kinsler, in 619 satin nickel or 622 matte black. For decorative trim in a lever instead, the Baldwin Estate 5103 passage lever uses the 5048 rose, the Deltana Claremont 5851, Manchester 6201, Morant 6411, and Linstead 6431 are entry levers in named designs, and the Emtek Arts and Crafts and Hammered leversets carry period styling in dummy pairs. Deltana Manchester, Morant, and Linstead each cover 1-3/8 inch to 2 inch doors.
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Does the Schlage Residential FC21ALXCAM622HOBCAM come with a warranty?
Absolutely. The Schlage Residential FC21ALXCAM622HOBCAM is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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