BEST 8K Series Grade 1 Dummy Trim Non-Keyed Cylindrical Knobset

BEST 8K Series Grade 1 Dummy Trim Non-Keyed Cylindrical Knobset

Premium Heavy-Duty Cylindrical Knobset for Commercial Applications

The BEST 8K Series Grade 1 Dummy Trim Non-Keyed Cylindrical Knobset delivers professional-grade performance for high-traffic commercial environments. Featuring knobs machined from solid brass or bronze bar stock with 2 1/8" diameter and 2 7/8" projection, this heavy-duty knobset accommodates doors from 1 3/8" to 2" thick with standard 2 3/4" backset. The 2 1/16" diameter chassis fits standard 2 1/8" door bore, while the 9/16" throw deadlocking latch provides reliable operation exceeding ANSI Grade 1 requirements.

Professional Features & Benefits

• Heavy-Duty Construction: Knobs machined from solid brass or bronze bar stock with steel-reinforced roses for exceptional durability in commercial applications.
• Grade 1 Performance: Exceeds ANSI Grade 1 requirements for security and reliability with proven heavy-duty design for high-traffic areas.
• Versatile Door Compatibility: Adjustable for door thickness from 1 3/8" to 2" standard, with special E trim available for 2 1/8" to 3" doors.
• Professional Installation Specifications: 2 1/16" diameter chassis fits 2 1/8" door bore with 1" latch hole and standard 2 3/4" backset configuration.
• Enhanced Security Design: Snap-on inside rose with no exposed screws and friction insert inside rose resists loosening for tamper resistance.
• Smooth Operation: Steel retractor with low friction bearings and long bearing length in chassis ensures wear-resistant, reliable performance.
• Rotating Knob Face: Allows easy hand of door change without removing the knob for installation flexibility.
• Corrosion-Resistant Components: Internal parts are brass or corrosion-treated steel for long product life in demanding environments.

Technical Specifications

• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Grade: Grade 1
• Handle Type: Knob
• Keyed: No
• Keyed Function: Non-Keyed
• Lock Function: Dummy
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Dummy
• Product Group: Mechanical Locks
• Product Subgroup: Bored Locksets
• Product Type: Knobsets
• Series: 8K Series
• Subcategory: Cylindrical

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness from 1 3/8" to 2" and standard 2 1/8" bore with 1" latch hole.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door surfaces for 2 3/4" backset configuration.
3. Prepare door by drilling required 2 1/8" bore hole and 1" latch hole as specified in manufacturer instructions.
4. Install the 2 1/16" diameter chassis and secure the knobset to door per manufacturer torque specifications with threaded roses.
5. Adjust knob alignment and test rotating knob face feature for proper operation and smooth function throughout the full range of motion.
6. Test knobset 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
• Government and Military Facilities
• Industrial and Warehouse Facilities
• Multi-Tenant Residential Properties
• International Projects in Non-ADA Compliant Regions

Why Choose BEST Quality?

BEST 8K Series cylindrical knobsets deliver professional-grade reliability with solid brass or bronze construction machined from bar stock and Grade 1 performance exceeding ANSI requirements. The heavy-duty design features steel retractor with low friction bearings and corrosion-treated internal components for long-term durability. Engineered for demanding commercial applications where dependable performance and premium workmanship are essential.