BEST 48H Series Mortise Deadlock with Single Cylinder Function and 7-Pin Housing

BEST 48H Series Mortise Deadlock with Single Cylinder Function and 7-Pin Housing

Heavy-Duty Commercial Mortise Lock Solution

The BEST 48H Series Mortise Deadlock delivers professional-grade security with single cylinder function and 7-pin housing designed to accept all BEST cores. This heavy-duty commercial lock features a 2 3/4" backset, 1" deadbolt throw, and robust construction with 0.095" cold rolled steel case measuring 3-3/8" x 4-3/16" x 1". Engineered for doors 1-3/4" thick with thick door configurations available up to 3" thick.

Professional Features & Benefits

• Heavy-Duty Case Construction: 0.095" cold rolled steel case, cover, and armored front with zinc dichromate plating for superior strength and corrosion protection.
• Enhanced Security Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.
• Precision Engineering: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
• Reversible Configuration: Non-handed cylinder retainer and reversible latch rotates 180 degrees for easy handing change without opening the case.
• Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with staked assembly design for self-alignment during installation.
• Four-Position Hub Toggle: Determines whether each hub is always locked, always unlocked, or locked by key for flexible operation and easy handing changes.
• Enhanced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch for maximum durability.
• Cylinder Security Features: Solid machined cylinder rings with wavy washer provides resistance to wrenching, plus cylinder security screw prevents removal without first removing interchangeable core.

Technical Specifications

Case: 0.095" cold rolled steel, 3-3/8" x 4-3/16" x 1". Steel is zinc dichromate plated for corrosion protection.
Faceplate: Brass or bronze material, 5-3/8" x 1-3/16" x 7/32" .
Strike: Brass, bronze, or stainless steel base material.
48HS1: Flat strike supplied standard, 3-1/2" x 1-1/8" x 3/32"
Fits standard door frame cut-out as specified in ANSI A115.5.
48HS2: Lipped strike supplied as option, 4-7/8" x 1-1/4" x 3/32". Fits standard door frame cut-out as specified in ANSI A115.1.
Backset: 2 3/4"
Door Thickness: Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to 3" thick (specify thickness when ordering). NOTE: “R" function not available for thick door.
Deadbolt: Stainless steel, 1" throw
Trim: Cylinder and trim ring only.
Finishes: Available in all finishes offered for 45H.

Installation & Operation

1. Review manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or thick door up to 3"), mortise pocket dimensions, and handing as applicable to this product.
2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 2 3/4" backset configuration.
3. Prepare door and frame by drilling required holes and routing mortise pocket to accommodate the 3-3/8" x 4-3/16" x 1" case dimensions as specified in manufacturer instructions.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, utilizing the self-aligning trim mechanism for accurate positioning.
5. Adjust operational components including the four-position hub toggle for proper alignment, latching, and smooth operation throughout the full range of motion.
6. Test device operation to verify proper function of the 1" deadbolt throw 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 48H Series mortise deadlocks deliver professional-grade reliability with heavy-duty 0.095" cold rolled steel construction and precision-engineered components designed for demanding commercial applications. The solid one-piece stainless steel anti-friction latch and roller bearing hub mechanism provide enhanced cycle life and superior security performance. Engineered for demanding commercial applications where dependable performance and maximum security are essential.