BEST 45H Series Heavy Duty Mortise Lock with Classroom Holdback Function and Rose TrimProfessional Grade Mortise Lock SolutionThe BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with classroom holdback functionality and rose trim design. Featuring a 2-3/4" backset and 8" H x 1-1/4" W x 1/16" T stainless steel faceplate, this Grade 1 mortise lock is engineered for demanding commercial applications. The solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength, while the 0.095" cold rolled steel case construction ensures exceptional durability.Professional Features & BenefitsHeavy-Duty Construction: 0.095" cold rolled steel case, cover, and armored front provide exceptional strength and durability for high-traffic commercial applications.Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch delivers 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.Grade 1 Performance: ANSI A156.13 Series 1000 Grade 1 Operation and Strength, Grade 2 Security certification ensures professional-grade reliability and compliance.Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening case, plus four position hub toggle for flexible configuration.Roller Bearing Mechanism: Smooth, wear-resistant operation with lever return spring mechanism located in trim for enhanced protection against lever droop.Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with staked assembly design for self-alignment during installation.Enhanced Security Features: Solid machined cylinder rings with wavy washer provides resistance to wrenching, plus cylinder security screw prevents removal without first removing interchangeable core.Antimicrobial Options: Available with UltraShield antimicrobial protected coating (626AM and 630AM finishes) for healthcare and high-cleanliness applications.Technical Specifications45H Series The design and operation of the BEST mortise lock meets the intent of the standard for ANSI A117.1 section 404.2.6.Builders Hardware Manufacturers Association:45H Series ANSI A156.13, Series 1000, Grade 1 Operation and Strength, Grade 2 Security. To meet Grade 1 Security, a drill resistant core (1CD, 1CDP, 1CDF, or 1CDX) must be used with escutcheon trims, and 1EK7K4 high security cylinder must be used with sectional trims.47H Series ANSI A156.13, Series 1000, Grade 1 Operational, Strength, and SecurityAuxiliary bolt Stainless steel, non-handed.Backset 2-3/4"Case 0.095 cold rolled steel, 5- 7/8" H x 7/8" D x 4-1/16" W. Steel is zinc dichromate plated for corrosion protection.Deadbolt Stainless steel, 1" throw.Latchbolt Solid stainless steel, 3/4" throw. Latch is oil-impregnated for anti-friction operation. Reversible without opening case.Strike For complete strike package specs see page 5.Door Thickness Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to 5" thick (specify thickness when ordering).Faceplate Stainless steel, brass or bronze material, 8" H x 1-1/4" W x 1/16" T. Lock face automatically adjusts to proper bevel during installation.Products protected by one or more of the following patents: 4,873,853 5,590,555 5,794,472Finishes 605 - bright brass, clear coated 606 satin brass, clear coated 611 bright bronze, clear coated 612 satin bronze, clear coated 613* oxidized satin bronze, oil rubbed 618 bright nickel plated, clear coated (brass base material) 619 satin nickel plated, clear coated (brass base material) 622 flat black coated (brass base material) 625 brightchromium plated (brass base material) 626 satin chromium plated (brass base material) 629 bright stainless steel 630 satin stainless steel 690* dark bronze coated (brass base material)*613 finish is designed to wear over time, providing an antique appearance.*690 finish will continue as a dark brown appearance over time.Antimicrobial Finish 626AM satin chrome plated with UltraShield antimicrobial protected coating 630AM satin stainless steel with UltraShield antimicrobial protected coatingThe BEST UltraShield finish inhibits the growth of bacteria and other microbes on the surface of the hardware.NOTE: BEST UltraShieldTM option is recommended for use on any hardware application where product cleanliness is a high priority. i.e;. Hospital/Healthcare, Elderly Care, Education, Transportation, Food-Service, Hospitality.Installation & OperationReview manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or thick door configuration up to 5"), mortise pocket dimensions, and handing requirements.Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 2-3/4" backset configuration.Prepare door mortise pocket and drill required holes for cylinder, trim mounting, and through-bolts per manufacturer specifications.Install case assembly into mortise pocket and secure with provided fasteners, ensuring armored front self-aligns with door bevel during installation.Install trim components using self-aligning trim mechanism for accurate positioning and secure with appropriate hardware.Configure four position hub toggle to determine locking operation for each hub (always locked, always unlocked, or locked by key) based on application requirements.Test lock operation including latch and deadbolt function, key operation, and lever return mechanism. Verify proper alignment and smooth operation throughout full range of motion. 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 45H Series mortise locks deliver professional-grade reliability with 0.095" cold rolled steel construction and solid stainless steel components engineered for demanding commercial applications. The Grade 1 ANSI certification and enhanced latch design with 50% more strike contact ensure dependable performance where security and durability are essential. Advanced features like roller bearing mechanisms and self-aligning installation components demonstrate BESTs commitment to professional hardware solutions.