BEST 45H Series Heavy Duty Mortise Lock Body – Storeroom Function with Field Reversible OperationProfessional Grade Mortise Lock Solution for Commercial ApplicationsThe BEST 45H Series mortise lock body delivers heavy-duty performance with storeroom function operation for demanding commercial environments. This field reversible lock body features a 2-3/4″ backset and accommodates doors 1-3/4″ thick with options for doors up to 5″ thick. Constructed from 0.095″ cold rolled steel with zinc dichromate plating for corrosion protection, this lock meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards.Professional Features & BenefitsHeavy-Duty Steel Construction: 0.095″ cold rolled steel case, cover, and armored front provide exceptional strength and durability for high-traffic commercial applications.Field Reversible Design: Reversible latch rotates 180 degrees for easy handing change without opening the case, reducing installation time and inventory requirements.Enhanced Security Features: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security performance.Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation with enhanced cycle life and reduced maintenance requirements.Four-Position Hub Toggle: Determines whether each hub is always locked, always unlocked, or locked by key for flexible operation configuration.Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with self-aligning installation capability.ANSI Grade 1 Compliance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards for commercial-grade performance.Antimicrobial Finish 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 up to 5″ thick door configuration), backset dimensions, and handing requirements.Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper mortise preparation.Prepare door mortise cavity according to specifications for 5-7/8″ H x 7/8″ D x 4-1/16″ W case dimensions and install strike box assembly.Install lock body in mortise cavity and secure with appropriate fasteners per manufacturer torque specifications.Configure four-position hub toggle settings to determine locked/unlocked operation for each hub based on application requirements.Test lock operation including latch and deadbolt function, verify proper alignment with strike, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.Professional ApplicationsCommercial Office BuildingsEducational FacilitiesHealthcare InstitutionsRetail EstablishmentsIndustrial and Warehouse FacilitiesMulti-Tenant Residential PropertiesGovernment and Municipal BuildingsWhy Choose BEST Quality?BEST 45H Series mortise locks deliver professional-grade reliability with 0.095″ cold rolled steel construction and precision-engineered components designed for demanding commercial applications. The solid stainless steel anti-friction latch and roller bearing hub mechanism provide enhanced cycle life with superior strength and security. Engineered for high-traffic environments where dependable performance and field serviceability are essential.