BEST 9K Series Grade 1 Cylindrical Patio Lock with Non-Keyed Lever Operation

BEST 9K Series Grade 1 Cylindrical Patio Lock with Non-Keyed Lever Operation

Premium Commercial-Grade Cylindrical Lock Solution

The BEST 9K Series Cylindrical Patio Lock delivers professional-grade security with Grade 1 BHMA certification for demanding commercial applications. This non-keyed lever lock features a 2-3/4" backset design with 9/16" latch throw and accommodates door thicknesses from 1-3/4" to 2-1/4". Built with critical brass and corrosion-treated steel components, this lock provides exceptional durability and smooth operation for high-traffic environments.

Professional Features & Benefits

• Door Compatibility: Designed for 1-3/4" to 2-1/4" door thickness with 2-3/4" standard backset for versatile installation options.
• Grade 1 Durability: BHMA Grade 1 certification ensures heavy-duty performance rated for commercial applications with exceptional cycle life.
• Attack-Resistant Construction: Rose locking pin design prevents twisting, bending, or breaking under attack while maintaining key access functionality.
• Premium Materials: Critical latch and chassis components are brass or corrosion-treated steel with zinc hubs and hardened steel alloy sleeve construction.
• Smooth Operation: Hub-mounted torsion spring and strong retractor springs prevent lever sag and provide snappy, reliable operation.
• Through-Bolt Security: Strong through-bolt mounting studs increase torque resistance with heavy rose liner material for enhanced attack resistance.
• Patio Function Operation: Latch operated by rotating inside lever; outside lever operates only when inside push button is out for privacy control.
• Manufacturer Warranty: 10 Year warranty coverage for added confidence and long-term protection.

Technical Specifications

• ANSI/BHMA: F77
• Backset (Distance): 2-3/4"
• Commercial/Residential: Commercial
• Department: Door Hardware
• Door Hand Direction: Non-Handed
• Duty Level: Heavy Duty
• Electronic: No
• Function Description: Latch operated by Rotating the inside lever, Rotating the outside lever only when the inside push button is out. Outside Lever is locked by Pushing the inside button, Inside lever is always unlocked and cannot be locked.
• Grade: Grade 1
• Handle Type: Lever
• Keyed: No
• Keyed Function: Non-Keyed
• Lock Function: Patio/Privacy
• Lock Type: Cylindrical
• PDF:9K Series Catalog: https://zensupply.com/content/pdf/best/BA-0003_BEST_9K-Catalog-03-24.pdf
• PDF:Service Manual for 9K Series: https://zensupply.com/content/pdf/best/4418941408539
• Product Attribute: Cylindrical Locks
• Product Category: Mechanical Locks
• Product Function: Patio/Privacy
• Product Group: Mechanical Locks
• Product Model: P
• Product Subgroup: Bored Locksets
• Product Substrate: Corrosion-Treated Steel
• Product Type: Leversets
• Series: 9K Series
• Standard Latch: 9/16" Throw
• Standard Strike: 2-3/4 x 1-1/8" with curved lip and box
• Subcategory: Cylindrical Locks
• Warranty: 10 Year

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness from 1-3/4" to 2-1/4" and 2-3/4" backset compatibility.
2. Use manufacturer-provided templates to mark mounting hole locations accurately including two additional 5/16" diameter holes at 12 o'clock and 6 o'clock positions for through-bolts.
3. Prepare door by drilling required holes per ANSI A115.2 standard door preparation and additional through-bolt holes as specified.
4. Install all mounting hardware including through-bolt mounting studs and secure the device to door per manufacturer torque specifications.
5. Adjust operational components for proper alignment, latching, and smooth lever operation with proper push button function.
6. Test device operation to verify proper patio function with inside lever always operational and outside lever controlled by push button. 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 9K Series cylindrical locks deliver professional-grade reliability with brass and corrosion-treated steel construction rated for Grade 1 commercial performance. The innovative rose locking pin and slotted key release cam design provides maximum attack resistance while maintaining operational integrity. Engineered for demanding commercial applications where dependable security and smooth operation are essential, backed by a comprehensive 10 Year warranty.