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

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.