BEST 9K Series 1DT Single Dummy Trim Cylindrical Lever Lock - Grade 1 Non-Keyed Heavy Duty

BEST 9K Series 1DT Single Dummy Trim Cylindrical Lever Lock - Grade 1 Non-Keyed Heavy Duty

Premium Grade 1 Cylindrical Lock Solution for Commercial Applications

The BEST 9K Series 1DT Single Dummy Trim represents the pinnacle of cylindrical lock engineering, combining top-quality materials with exceptional craftsmanship for demanding commercial applications. This Grade 1 non-keyed dummy lock features heavy-duty construction with 2 3/4" standard backset and accommodates door thickness from 1 3/4" to 2 1/4". Built with critical latch and chassis components in brass or corrosion-treated steel, this lock delivers the reliability and security that BEST is known for in professional installations.

Professional Features & Benefits

• Door Compatibility: Designed for 1 3/4" to 2 1/4" door thickness with 2 3/4" standard backset (3 3/4" and 5" available) for versatile installation options.
• Grade 1 Heavy-Duty Construction: BHMA listed for A156.2, Series 4000, Grade 1 with brass or corrosion-treated steel critical components for maximum durability in high-traffic commercial environments.
• Attack-Resistant Design: Rose locking pin and assembly design offers exceptional torque resistance, preventing twisting, bending, or breaking under attack while maintaining key access functionality.
• Premium Materials: High-quality zinc alloy lever handles with brass or bronze trim components, featuring seamless one-piece hardened steel alloy outer sleeve construction for enhanced reinforcement.
• Smooth Operation: Hub-mounted torsion spring and strong retractor springs prevent lever sag while providing smooth, snappy operation throughout the lock’s service life.
• Through-Bolt Mounting: Strong through-bolt mounting studs with heavy rose liner material provide superior torque resistance and attack protection.
• Fire Rating Compliance: UL listed for use on 3-hour A label single or double swinging doors, meeting critical life safety requirements.
• Comprehensive Warranty: 10-year manufacturer warranty provides long-term confidence and protection for professional installations.

Technical Specifications

• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Function Description: This is a single, surface-mounted lever for an inactive door or a non-latching door
• Grade: Grade 1
• Handle Type: Lever
• Keyed: No
• Keyed Function: Non-Keyed
• Lock Function: Dummy
• Lock Type: Cylindrical
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Dummy
• Product Group: Mechanical Locks
• Product Model: 1DT
• Product Subgroup: Bored Locksets
• Product Type: Leversets
• Series: 9K Series
• Subcategory: Cylindrical Locks
• Warranty: 10 Year

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (1 3/4" to 2 1/4"), backset dimensions, and non-handed installation compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately, including standard ANSI A115.2 preparation plus two additional 5/16" diameter through-bolt holes at 12 o’clock and 6 o’clock positions.
3. Prepare door by drilling required holes including 2 1/8" diameter chassis hole and through-bolt mounting holes as specified in manufacturer instructions.
4. Install through-bolt mounting hardware and secure the lock assembly to door per manufacturer torque specifications for maximum attack resistance.
5. Adjust lever operation for proper alignment and smooth function, ensuring rose assembly is properly seated and locking pin engagement is secure.
6. Test dummy function operation to verify proper lever movement and mounting stability. 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 deliver professional-grade reliability with premium brass and corrosion-treated steel construction, BHMA Grade 1 certification, and UL fire rating compliance. The 10-year manufacturer warranty and innovative attack-resistant design features demonstrate BEST’s commitment to engineering excellence. Engineered for demanding commercial applications where dependable performance, security, and long-term durability are essential requirements.