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", this mortise deadlock provides superior strength and security for demanding commercial applications.

Professional Features & Benefits

• Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front provide exceptional strength and durability for commercial applications.
• Superior Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for enhanced strength and security.
• Reversible Operation: Reversible latch rotates 180 degrees for easy handing change without opening case, with non-handed cylinder retainer for installation flexibility.
• Enhanced Case Integrity: Four case cover screws (one at each corner) plus interlocking armored front and cover design at the latch ensure robust construction.
• Smooth Operation: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.
• Security Features: Solid machined cylinder rings with wavy washer provide resistance to cylinder wrenching, with security screw preventing core removal.
• Professional Installation: Self-aligning trim mechanism and armored front design allow for fast, easy, and accurate installation with automatic door bevel alignment.
• Visual Lock Indication: Locking toggle includes clear indication of locked and unlocked states with optional visual indicator showing padlock icons.

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 3-3/8" x 4-3/16" x 1" case.
3. Prepare door and frame by drilling required holes and routing mortise pocket as specified in manufacturer instructions, ensuring proper fit for the armored front assembly.
4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, utilizing the four corner case cover screws.
5. Adjust operational components including the four position hub toggle design 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, latch mechanism, and visual indicators. Make final adjustments as needed and 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 latch provides 50% more surface contact for superior strength, while the roller bearing hub mechanism ensures smooth, wear-resistant operation. Engineered for dependable performance where security and durability are essential.