BEST 48H Standard Series Mortise Deadbolt with Single Cylinder Classroom FunctionHeavy-Duty Commercial Mortise Lock SolutionThe BEST 48H Standard Series Mortise Deadbolt delivers professional-grade security with single cylinder classroom function and 7-pin housing that accepts all BEST cores. Featuring a 2 3/4″ backset and 1″ throw stainless steel deadbolt, this heavy-duty lock is designed for doors 1-3/4″ thick with optional thick door configuration available up to 3″. The mortise lock incorporates 0.095″ cold rolled steel construction with zinc dichromate plating for superior corrosion protection and durability in demanding commercial applications.Professional Features & BenefitsHeavy-Duty Steel Construction: 0.095″ cold rolled steel case, cover, and armored front provide exceptional strength and durability for commercial applications.Enhanced Security Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening the case.Precision Engineering: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced strike wear.Advanced Case Integrity: Four case cover screws (one at each corner) plus interlocking armored front and cover design at the latch ensure maximum structural integrity.Visual Lock Indication: Locking toggle includes clear indication of “locked” and “unlocked” states with optional visual indicator showing padlock icons.Cylinder Security: Solid machined cylinder rings with wavy washer provide resistance to wrenching, while cylinder security screw prevents removal without first removing interchangeable core.Self-Aligning Installation: Staked assembly design allows armored front to self-align with door bevel during installation for fast, easy, and accurate mounting.Technical SpecificationsCase: 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″ throwTrim: Cylinder and trim ring only.Finishes: Available in all finishes offered for 45H.Installation & OperationReview manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4″ or up to 3″ for thick door configuration), mortise pocket dimensions, and handing as applicable.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.Prepare door by cutting mortise pocket and drilling required holes for the 2 3/4″ backset configuration and 1″ deadbolt throw.Install mortise case into door pocket and secure the armored front assembly, allowing self-alignment with door bevel during installation.Mount strike assembly (flat 48HS1 standard or optional lipped 48HS2) to frame per ANSI specifications and adjust for proper deadbolt engagement.Test lock operation including deadbolt throw, latch function, and visual indicators to verify proper function and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.Professional ApplicationsEducational Facilities and Classroom SecurityCommercial Office BuildingsHealthcare InstitutionsGovernment and Municipal BuildingsMulti-Tenant Residential PropertiesIndustrial and Warehouse FacilitiesRetail EstablishmentsWhy Choose BEST Quality?BEST 48H Series mortise locks deliver professional-grade reliability with heavy-duty 0.095″ cold rolled steel construction and precision-engineered components rated for demanding commercial applications. The solid one-piece stainless steel anti-friction latch provides 50% more surface contact for superior strength, while the roller bearing hub mechanism ensures smooth, wear-resistant operation. Engineered for institutional and commercial environments where dependable security performance is essential.