Sargent 8238-ET Grade 1 Classroom Security Mortise Lock with Double Cylinder and Escutcheon TrimProfessional Grade 1 Mortise Lock for Enhanced Classroom SecurityThe Sargent 8238-ET delivers maximum security, performance, and durability with heavy-duty components designed for commercial applications. This Grade 1 classroom security intruder function lock features a 2 3/4″ backset, 1 3/4″ door thickness compatibility, and 3/4″ latchbolt throw for reliable operation. The multi-functional lock body integrates with all SARGENT key systems including Degree, Signature, KESO, and XC, while meeting ANSI/BHMA A156.13 Series 1000 standards for operational excellence.Professional Features & Benefits 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 certification ensures reliable performance in demanding commercial environments. Precise Door Compatibility: Standard 2 3/4″ backset depth and 1 3/4″ door thickness with 3/4″ latchbolt throw for secure engagement. Universal Key System Integration: Compatible with all SARGENT key systems including Degree, Signature, KESO, and XC for flexible master keying options. Field Reversible Handing: Adaptable installation reduces inventory requirements and simplifies on-site configuration changes. Comprehensive Fire Rating: UL 10C positive pressure certified and UL-cUL Fire-Rated up to 3 hours for life safety compliance. EcoFlex Technology: Electromechanical versions operate from 12 to 24VDC with up to 89% energy savings through advanced power management. 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 Review manufacturer specifications and verify door preparation requirements including door thickness of 1 3/4″, backset depth of 2 3/4″, and handing as applicable to this mortise lock. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper mortise preparation. Prepare door and frame by drilling required holes and routing mortise cavity as specified in manufacturer instructions for the lock body and strike. Install all mounting hardware including lock body, cylinder, and escutcheon trim, securing the device to door and frame per manufacturer torque specifications. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion, ensuring 3/4″ latchbolt engagement. Test device operation to verify proper function including key operation, lever action, and security features, making final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.Professional Applications Educational Facilities and Classroom Security Commercial Office Buildings Healthcare Institutions Government and Municipal Buildings Multi-Tenant Residential Properties Industrial and Warehouse Facilities Retail EstablishmentsWhy Choose Sargent Quality?Sargent mortise locks deliver professional-grade reliability with heavy-duty construction tested to 16 million cycles and comprehensive certifications including UL 10C fire rating up to 3 hours. The 10-year limited warranty with 2-year electrical component coverage demonstrates the manufacturers confidence in long-term performance. Engineered for demanding commercial applications where dependable security and operational excellence are essential.