Falcon X411 Heavy Duty Grade 1...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,213.00
$957.69
Falcon Falcon X411 - Asylum Lock - Heavy Duty Double Cylinder Cylindrical Lock, Grade 1 FAL-X411

Falcon X411 Heavy Duty Grade 1 Asylum Lock Double Cylinder Cylindrical Knobset

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Model: X411LD EG 626
$1,213.00
$957.69
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,213.00
$957.69
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Falcon X411 Heavy Duty Grade 1 Asylum Lock Double Cylinder Cylindrical Knobset

Professional-Grade Institutional Security Solution

The Falcon X411 delivers heavy-duty cylindrical lock performance specifically designed for asylum, institution, and utility applications. This Grade 1 certified knobset accommodates door thickness from 1-3/8" to 2-1/4" with a standard 2-3/4" backset configuration. Built with brass or cold-formed steel construction featuring zinc dichromate coating for rust resistance, the X411 provides the enhanced security and durability required for demanding institutional environments.

Professional Features & Benefits

  • Door Compatibility: Accommodates door thickness from 1-3/8" to 2-1/4" with standard 2-3/4" backset for versatile installation options.
  • Heavy-Duty Construction: Brass or cold-formed steel construction with zinc dichromate coating provides exceptional rust resistance and durability.
  • Interchangeable Core System: Quick, convenient re-keying capability with cores compatible with SFIC products from other manufacturers for flexible key management.
  • Reinforced Rose Design: Heavy-wrought brass, bronze, or stainless steel roses over steel through-bolted rose inserts deliver added strength for high-security applications.
  • Grade 1 Certification: ANSI/BHMA A156.2 Series 4000 Grade 1 certified and UL listed with 3-hour A label fire rating for code compliance.
  • Security Features: Spring-loaded retainer secures knobs and cannot be depressed when locks are engaged, preventing unauthorized access.
  • Specialized Knob Options: Abrasive-coated and knurled knobs available to help identify entrances to hazardous areas for accessibility compliance.
  • Manufacturer Warranty: 10-year limited warranty provides long-term protection and confidence in product reliability.

Technical Specifications

  • ANSI/BHMA: F87
  • Backset (Distance): 2-3/4",Strike,5185 - Square Corner
  • Commercial/Residential: Commercial
  • Department: Door Hardware
  • Door Hand Direction: Non-Handed
  • Door Thickness Range: 1-3/8" to 2-1/4"
  • Duty Level: Heavy Duty
  • Fire Rating: Yes
  • Grade: Grade 1
  • Keyed: Yes
  • Keyed Function: Double Cylinder
  • Lock Function: Asylum/Institution/Utility
  • Lock Type: Cylindrical
  • Product Attribute: Cylindrical Locks
  • Product Category: Mechanical Locks
  • Product Function: Asylum/Institution/Utility
  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • Product Type: Knobsets
  • Series: X Series
  • Standard Strike: 1-1/4" x 4-7/8", ANSI, Square curved lip corner, no box
  • Subcategory: Cylindrical Locks
  • UL Listing Type: UL Listed (3 Hour A Label)

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness range of 1-3/8" to 2-1/4", 2-3/4" backset, and non-handed configuration.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for cylindrical lock installation.
  3. Prepare door by drilling required holes per manufacturer specifications for the cylindrical lock mechanism and through-bolt assembly.
  4. Install the lock mechanism, through-bolted rose inserts, and secure all mounting hardware per manufacturer torque specifications.
  5. Install interchangeable cores and test key operation to verify proper cylinder function and security engagement.
  6. Test complete lock operation including knob function, locking mechanism, and spring-loaded retainer security features. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Healthcare and Mental Health Facilities
  • Correctional and Detention Centers
  • Government and Military Installations
  • Educational Institution Security Areas
  • Utility and Maintenance Access Points
  • High-Security Commercial Buildings
  • Marine Environment Applications

Why Choose Falcon Quality?

Falcon X411 cylindrical locks deliver professional-grade reliability with heavy-duty brass or cold-formed steel construction rated for Grade 1 performance in demanding institutional applications. UL listed with 3-hour A label fire rating and backed by a 10-year limited warranty for added confidence. Engineered specifically for asylum, institution, and utility applications where maximum security and dependable operation are essential.

Manufacturer Resources

Falcon Locks Catalog

Product Specs

Product Group:
Mechanical Locks
Series:
X Series
Grade:
Grade 1
Duty Level:
Heavy Duty
Standard Strike:
1-1/4" x 4-7/8", ANSI, Square curved lip corner, no box
Subcategory:
Cylindrical Locks
ANSI/BHMA:
F87
Product Subgroup:
Bored Locksets
Keyed Function:
Double Cylinder
Commercial/Residential:
Commercial
Keyed:
Yes
Product Type:
Knobsets
Lock Type:
Cylindrical
UL Listing Type:
UL Listed (3 Hour A Label)
Lock Function:
Asylum/Institution/Utility
Product Attribute:
Cylindrical Locks
Backset (Distance):
2-3/4",Strike,5185 - Square Corner
Product Function:
Asylum/Institution/Utility
Door Hand Direction:
Non-Handed
Door Thickness Range:
1-3/8" to 2-1/4"
Fire Rating:
Yes
Product Category:
Mechanical Locks
Department:
Door Hardware

Falcon X411LD EG 626 – Frequently Asked Questions

1) What does the asylum function on the Falcon X411 actually do at the door?
Asylum/institution/utility function means a key is required on both sides to operate the knobs. The X411 is a double cylinder cylindrical lock, so neither knob retracts the latch without a key, and no one passes either direction without one. That is the ANSI/BHMA F87 function. On an egress-required opening this is the wrong lock, and life safety code generally prohibits keyed operation on the egress side of a required exit, so use it on utility rooms, mechanical spaces, and secure areas where free egress is not required.
2) Can the Falcon X411 knob lock go on a fire rated door?
Yes. The X411 is UL Listed with a 3 hour A label fire rating, so it is good on the full range of rated openings up to and including 3 hour stairwell and shaft doors. It is also ANSI/BHMA Grade 1, the highest cylindrical grade, which is what most institutional and government specs call for.
3) Can I get the Falcon X411 to work on my existing master key system?
Yes, and you choose how. Order it less small format interchangeable core if you are running an SFIC system and want to drop in your own cores, order it less cylinder if you are supplying conventional cylinders, or take it with a conventional 6-pin cylinder keyed to one of the offered keyways: G standard, Schlage C, E, H, K, L, N, or P. The Schlage C keyway matters if your building is already keyed Schlage C, because it lets the X411 join that system rather than starting a second one. The interchangeable cores work with SFIC products from other manufacturers, so a facility already on a small format core system can rekey these the same way it rekeys everything else.
4) Will the Falcon X411 fit doors that a Schlage A Series or Dexter C2000 knob will not?
On thickness, yes. The X411 covers 1-3/8 to 2-1/4 inch doors. The Schlage A Series stops at 1-7/8 inches and the Dexter C2000 Series knob locks stop at 1-3/4 inches, so on a 2 inch or 2-1/4 inch institutional door neither one reaches. The Corbin Russwin CK4310 Grade 1 knob goes to 2 inches, still short of 2-1/4. If you are putting hardware on unusually thick doors, the X411 is the one with the range.
5) Which knob lock fits a 2-1/4 inch thick door if the Falcon X411 does not suit the job?
The Falcon X411 covers 1-3/8 inch to 2-1/4 inch door thickness, which is the widest range among the comparable knob locks. The Corbin Russwin CK4851 Grade 1 entrance/office cylindrical lock with a conventional cylinder covers 1-3/8 inch to 2 inch, and the Schlage A170 dummy trim covers 1-3/8 inch to 1-7/8 inch. On a 2-1/4 inch door the X411 is the one in this group whose published range reaches that thickness.
6) What is the closest Grade 1 heavy duty cylindrical knob lock to the Falcon X411 if a double cylinder asylum function is not required?
The Sargent 8XG04 is a Grade 1 heavy duty cylindrical knob lock in the 8X Line Series with a 2-3/4 inch backset, and it is a storeroom/closet function with a single cylinder. The Falcon X411 is also Grade 1 heavy duty at a 2-3/4 inch backset, but it is an asylum/institution/utility function with a double cylinder, meaning a key is required from both sides. Choose the 8XG04 where the door must stay locked with free egress from the inside, and the X411 where the opening calls for key control on both faces.
7) Is the BEST 8K entrance knob lock an equivalent to the Falcon X411?
Both are Grade 1 heavy duty cylindrical knob locks, so they share the same duty tier. They differ in function: the BEST 8K Series is a single cylinder entrance function, while the Falcon X411 is a double cylinder asylum/institution/utility lock. An entrance function unlocks from the inside knob; the X411 keeps key operation on both sides. Match the function to the opening before treating one as a stand-in for the other.
8) Is there a Falcon X411 option that helps mark a hazardous room for the blind?
Yes. Abrasive coated and knurled knobs are available on the X411 to identify entrances to hazardous areas by touch, which is the tactile warning requirement facilities run into on mechanical, electrical, and chemical storage rooms. Specify it when you order; the standard smooth knob does not carry it.
9) What finishes does the Falcon X411 come in for matching the rest of my building?
Six BHMA finishes: 605 bright brass, 606 satin brass, 613 satin bronze oil-rubbed, 625 bright chrome, 626 satin chrome, and 630 satin stainless steel. 626 satin chrome is the usual institutional standard and 630 satin stainless steel is the common pick in healthcare and coastal or marine buildings where corrosion matters. The roses are heavy wrought brass, bronze, or stainless over steel through-bolted rose inserts, and the underlying lock is brass or cold-formed steel with a zinc dichromate coating for rust resistance.
10) Is a Grade 2 knob lock good enough, or do I need the Grade 1 Falcon X411?
For a corridor or an office door in a light traffic building, Grade 2 does the job: the Corbin Russwin CK4851 entrance/office knob lock and the Sargent 6G04 storeroom knob are both Grade 2 options. The X411 is Grade 1 heavy duty with through-bolted rose inserts and a spring-loaded knob retainer that cannot be depressed while the lock is engaged, which is what a detention, correctional, or mental health facility spec asks for and what survives abuse and high cycle counts. Institutional and government specs generally write Grade 1 outright, in which case Grade 2 will not pass.
11) Does the Falcon X411 need a left hand or right hand version?
No handing to specify. The X411 is non-handed, so the same lock works on a left hand, right hand, left hand reverse, or right hand reverse opening. For a property manager standardizing across a building, that means one part number to stock instead of two.
12) What do I need to specify when ordering a Falcon X411 asylum lock?
Five things. Cylinder: conventional 6-pin, less cylinder, or less SFIC. Keyway if you are taking cylinders: G standard, Schlage C, E, H, K, L, N, or P. Latch: 98535 square corner or 92331 radius corner, both 2-3/4 inch backset. Strike: one of the five, matched to your frame prep. Finish: one of the six BHMA finishes. Keying and a key code are set separately. Miss the latch corner or the strike and the lock will not drop into the existing prep.
13) What Grade 1 knob lock should I use on an interior institutional door that needs no key at all?
The Schlage D10S passage latch is a Grade 1 heavy duty non-keyed cylindrical knob lock in the D Series with an Orbit knob, and the Corbin Russwin CK4310 is a Grade 1 non-keyed passage/closet cylindrical lock in the CK4300 Series for doors 1-3/8 inch to 2 inch thick. Both hold the knobs in a free-turning latch with no cylinder. The Falcon X411 is keyed with a double cylinder, so it belongs on openings that need key control rather than on corridor and closet doors.
14) What Grade 1 alternative to the Falcon X411 keys from the outside only on an office door?
The Corbin Russwin CK4851 is a Grade 1 entrance/office cylindrical lock with a Global knob and a conventional cylinder, for doors 1-3/8 inch to 2 inch. It takes a key on the outside and leaves the inside free. The Falcon X411 is a double cylinder asylum/institution/utility lock, so a key is carried on both sides. Both are Grade 1, so the decision is the function and the door thickness rather than the duty tier.
15) Will a Schlage A170 or a BEST 6K dummy trim work where a Falcon X411 is specified?
No. The Schlage A170 is a Grade 2 single dummy trim and the BEST 6K Series 1DT is a Grade 2 medium duty single dummy trim; dummy trim is a fixed pull with no latch and no cylinder. The Falcon X411 is a keyed Grade 1 cylindrical lock with a latch and a double cylinder. Dummy trim belongs on an inactive leaf, not on an opening that has to latch and lock.
16) For a residential rental unit door, what keyed knob lock is used instead of the Falcon X411?
The Kwikset 400P-CP Polo keyed entry knob is a Grade 3 entrance lock for doors 1-3/8 inch to 1-3/4 inch and ships with a round corner adjustable latch and round corner strike, and the Cal-Royal BER00 is a Grade 3 entrance/office knob lock with a Kwikset keyway for the same thickness range. The Falcon X411 is a Grade 1 commercial lock with a double cylinder and a UL 3 hour A label fire rating, which is what an institutional or rated opening calls for. On a standard apartment entry the Grade 3 entrance knobs are the residential-tier fit.
17) I need a keyless combination knob on a utility door instead of the Falcon X411 - what is available?
The Lockey 3830 is a mechanical keyless combination knob lock with an auto-locking passage function for doors 1 3/16 inch to 2 inch thick. It removes keys from the opening entirely. The Falcon X411 is a keyed double cylinder lock built on an interchangeable core system, which is the choice when the door has to sit inside an existing master key schedule rather than on a standalone combination.
18) Does the Sargent 28C-KNOB knob trim replace a Falcon X411 knobset?
No. The Sargent 28C-KNOB is exit device trim with a knob and rose in an entrance function for 1-3/4 inch doors, and it mounts to an exit device rather than working on its own. The Falcon X411 is a complete non-handed cylindrical knobset with its own latch and strike for doors 1-3/8 inch to 2-1/4 inch. Order the 28C trim only when there is already a 28 Series exit device on the door.
19) Which knob lock matches the Falcon X411 finish range for standardizing a facility?
The Falcon X411 is offered in 605 Bright Brass, 606 Satin Brass, 613 Satin Bronze Oil-Rubbed, 625 Bright Chrome, 626 Satin Chrome and 630 Satin Stainless Steel, the BHMA finish numbers institutional schedules are written in. The Bravura Dallas passage knobset is specified in a US4 Satin Brass finish and the Callan Roland in US15 Satin Nickel, which are US finish designations. When rolling one finish across a building, the X411 covers the common BHMA numbers in a single Grade 1 heavy duty lock.
How fast can I get the Falcon X411LD EG 626 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Falcon X411LD EG 626 come with a warranty?
Absolutely. The Falcon X411LD EG 626 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 Falcon X411LD EG 626?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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