BEST 9K Grade 1 Entrance Cylindrical Lock with 14 Lever and L Rose

BEST 9K Grade 1 Entrance Cylindrical Lock with 14 Lever and L Rose

Premium Commercial-Grade Security Solution

The BEST 9K Grade 1 Entrance Cylindrical Lock delivers professional-grade security with exceptional craftsmanship and durability. This heavy-duty cylindrical lock features a 14 lever design with L rose configuration, 2-3/4" backset, and SFIC less core capability. Built with top-quality materials including solid brass components and zinc alloy construction, this lock meets BHMA Grade 1 standards and UL 3-hour fire rating requirements for demanding commercial applications.

Professional Features & Benefits

• Grade 1 Performance: BHMA A156.2 Series 4000 Grade 1 listing ensures maximum security and durability for high-traffic commercial environments.
• Heavy-Duty Construction: Solid brass latch with 9/16" throw and zinc alloy lever handles provide exceptional strength and corrosion resistance.
• Rose Assembly Design: Rose locking pin and assembly design offers superior torque resistance, preventing twisting, bending, or breaking under attack.
• Through-Bolt Mounting: Strong through-bolt mounting studs increase torque resistance with heavy rose liner material for enhanced attack resistance.
• Innovative Locking Mechanism: Slotted key release cam and locking lug assembly create maximum attack resistance while maintaining key access even when damaged.
• SFIC Compatibility: Interchangeable core allows for quick re-keying and customized master keying systems for flexible access control.
• ADA Compliance: Design and operation meets ANSI A117.1 section 404.2.6 requirements for accessibility applications.
• Fire Rating: UL listed for use on 3-hour A label single or double swinging doors for life safety compliance.

Technical Specifications

• Backset (Distance): 2-3/4"
• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Grade: Grade 1
• Handle Type: Lever
• Keyed: Yes
• Keyed Function: Single Cylinder
• Lock Function: Entrance
• Lock Type: Cylindrical
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Storeroom
• Product Group: Mechanical Locks
• Product Model: AB
• Product Subgroup: Bored Locksets
• Product Type: Leversets
• Series: 9K Series
• Standard Strike: 2-3/4 x 1-1/8" with curved lip and box
• Subcategory: Cylindrical Locks

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including 1-3/4" to 2-1/4" door thickness and 2-1/8" diameter hole preparation per ANSI A115.2 standards.
2. Use manufacturer-provided drill jig to mark through-bolt mounting hole locations at 12 o'clock and 6 o'clock positions requiring 5/16" diameter holes.
3. Prepare door by drilling required 2-1/8" diameter hole and two additional 5/16" through-bolt holes as specified in manufacturer instructions.
4. Install chassis assembly and secure with through-bolt mounting studs per manufacturer torque specifications for maximum attack resistance.
5. Adjust lever operation and latch alignment for proper engagement with strike plate and smooth operation throughout full range of motion.
6. Test lock operation including key function, lever operation from both sides, and latch engagement. 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

Anti-Microbial Option

Available with UltraShield antimicrobial protected coating (finish 626AM) that inhibits the growth of bacteria and other microbes on hardware surfaces. Recommended for healthcare, elderly care, education, transportation, food service, and hospitality applications where product cleanliness is a high priority.

Why Choose BEST Quality?

BEST 9K series cylindrical locks combine top-quality materials and exceptional craftsmanship with solid brass components and zinc alloy construction rated for Grade 1 commercial performance. Built on BEST's legacy of innovation, these locks deliver professional-grade reliability with strong retractor springs, attack-resistant design features, and UL 3-hour fire rating. Engineered for demanding commercial applications where dependable security and long-lasting performance are essential.