Sargent 8259-ET School Security Function Heavy Duty Double Cylinder Mortise Lock with Escutcheon Trim

Sargent 8200 Series School Security Function Heavy Duty Double Cylinder Mortise Lock with Escutcheon Trim

Professional Grade 1 Mortise Lock for Educational Facility Security

The Sargent 8200 Series mortise lock delivers maximum security, performance, and durability with heavy-duty components designed for demanding commercial applications. This Grade 1 mortise lock features a 2 3/4" backset, 1 3/4" door thickness compatibility, and 3/4" latchbolt throw for reliable operation. Certified to ANSI/BHMA A156.13 Series 1000 standards and UL 10C fire-rated up to 3 hours, this lock integrates with all SARGENT key systems including Degree, Signature, KESO, and XC.

Professional Features & Benefits

• Dimensional Specifications: 2 3/4" backset with 1 3/4" door thickness compatibility and 3/4" latchbolt throw for precise installation requirements.
• Heavy-Duty Durability: Exceeds independently verified testing with completion of UL Cycle Above and Beyond test at 16 million cycles for exceptional durability in high-traffic applications.
• Grade 1 Performance: ANSI/BHMA A156.13 Series 1000 Operational Grade 1 certification ensures maximum security and reliability for commercial installations.
• Fire Rating Compliance: UL 10C positive pressure fire-rated up to 3 hours with NFPA 80 compliance for critical life safety applications.
• Universal Key System Integration: Compatible with all SARGENT key systems including Degree, Signature, KESO, and XC providing flexible master keying options.
• Field Reversible Handing: Allows on-site configuration for left or right-hand applications without additional parts or modifications.
• Multi-Functional Design: Available in 56 different functions including electromechanical, security and monitoring options with easy on-site function switching.
• Manufacturer Warranty: 10-year limited warranty with 2-year coverage on electrical components for added confidence and protection.

Technical Specifications

• Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including 1 3/4" door thickness, 2 3/4" backset, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces.
3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
6. Test device operation to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

• Educational Facilities and School Security
• Commercial Office Buildings
• Healthcare Institutions
• Government and Municipal Buildings
• Multi-Tenant Residential Properties
• Industrial and Warehouse Facilities
• Retail Establishments

Why Choose Sargent Quality?

Sargent 8200 Series mortise locks deliver professional-grade reliability with patented design and construction rated for 16 million cycles in UL testing. The 10-year limited warranty with 2-year electrical component coverage demonstrates confidence in long-term performance. Engineered for demanding commercial applications where dependable security and fire safety compliance are essential.