BEST 6KL Series Grade 2 Deadlocking Latch with Steel Construction

BEST 6KL Series Grade 2 Deadlocking Latch with Steel Construction

Professional Medium-Duty Cylindrical Lock Solution

The BEST 6KL Series Deadlocking Latch delivers Grade 2 medium-duty performance with superior steel or brass construction for enhanced strength and durability. This cylindrical knob set features a 1/2" throw deadlocking latch and 7-pin SFIC keying for professional security applications. UL/cUL listed for 3-hour fire rating on single 4' x 8' doors, meeting ANSI/BHMA A156.2 Series Grade 2 standards for commercial installations.

Professional Features & Benefits

• Heavy-Duty Construction: Steel or brass construction provides superior strength compared to weaker metal alternatives used in standard cylindrical knob sets.
• Deadlocking Security: 1/2" throw deadlocking latch ensures positive engagement and enhanced security performance.
• Professional Keying System: 7-pin SFIC (Small Format Interchangeable Core) keying allows for flexible master key systems and easy rekeying.
• Fire-Rated Performance: UL/cUL listed for 3-hour fire rating on single 4' x 8' doors for code compliance in fire-rated openings.
• Grade 2 Certification: ANSI/BHMA A156.2 Series Grade 2 rating ensures medium-duty commercial performance standards.
• Quality Materials: Component parts manufactured from brass, bronze, or zinc with internal parts of brass or zinc dichromate steel for long-term reliability.
• Comprehensive Warranty: Three-year mechanical warranty and three-year finish warranty (613 finish excluded) for added confidence and protection.

Technical Specifications

• Certifications ANSI/BHMA A156.2 Series—Grade 2 UL/cUL listed (3 hour) for single 4’ x 8’ doors
• Product Specifications Materials: Component parts brass, bronze, or zinc; internal parts brass or zinc dichromate steel Latch: 1/2” throw deadlocking
• Keying 7-pin SFIC 
• Warranties Three-year mechanical Three-year finish (613 carries no finish warranty)

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or 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

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

Why Choose BEST Quality?

BEST 6KL Series cylindrical locks deliver professional-grade reliability with steel or brass construction rated for Grade 2 medium-duty commercial applications. Three-year mechanical and finish warranties provide added confidence and protection. Engineered for demanding commercial applications where dependable performance and fire-rated compliance are essential.