BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$586.00
$363.33
BEST BEST 45HCA Series (W - Storeroom Function) - Heavy Duty Mortise Lockbody Only, Field Reversible 45HCAW

BEST 45H Series Heavy Duty Mortise Lock Body - Storeroom Function with Field Reversible Operation

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Model: 45HCAW626
$586.00
$363.33
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$586.00
$363.33
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BEST 45H Series Heavy Duty Mortise Lock Body - Storeroom Function with Field Reversible Operation

Professional Grade Mortise Lock Solution for Commercial Applications

The 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 & Benefits

  • Heavy-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 Specifications

45H 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 Security

Auxiliary 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 spec’s 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 5,794,472
Finishes –
• 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 coating
The 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 & Operation

  1. Review 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.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper mortise preparation.
  3. 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.
  4. Install lock body in mortise cavity and secure with appropriate fasteners per manufacturer torque specifications.
  5. Configure four-position hub toggle settings to determine locked/unlocked operation for each hub based on application requirements.
  6. 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 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 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.

Product Specs

Series:
45H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Double Cylinder
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise
Keyed:
Yes
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Storeroom
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Storeroom
Face Plate:
8" H x 1-1/4" W x 1/16" T
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

BEST 45HCAW626 – Frequently Asked Questions

1) Does the BEST 45H storeroom mortise lock come with trim and a cylinder, or is it just the lock body?
What ships is the lock body only. The 45H storeroom chassis is prepped for a BEST small format interchangeable core and comes less core, so you need to add the SFIC core separately along with your lever or knob trim, roses or escutcheons, and spindles. Plan the trim selection at the same time you order, because the Grade 1 security upgrade path differs by trim type: escutcheon trim needs a drill resistant core (1CD, 1CDP, 1CDF or 1CDX), while sectional trim needs the 1EK7K4 high security cylinder.
2) Will the BEST 45H mortise lock fit a 1-3/4 inch commercial door?
Yes, the standard 45H configuration is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, up to 5 inches, BEST builds a thick door configuration and the thickness has to be called out on the order. The mortise pocket has to take a case of 5-7/8 H x 7/8 D x 4-1/16 W inches, and the backset is 2-3/4 inches.
3) Do I have to order the BEST 45H by hand, or can I change the handing in the field?
Handing is still specified on the order (RH, LH, RHRB or LHRB), but you are not stuck with it. The latchbolt reverses by rotating 180 degrees without opening the case, so a lock delivered as one hand can be flipped on site. That is why a lot of property managers stock one of these instead of carrying both hands on the shelf.
4) What does storeroom function actually do on a BEST 45H lock?
Storeroom means the outside lever or knob is always locked and only the key retracts the latch. The inside is always free for egress. On the 45H the four-position hub toggle sets whether each hub is always locked, always unlocked, or locked by key, so the storeroom behavior is configured at the hub rather than by swapping the lock. Typical use is stock rooms, mechanical rooms, IT closets and any opening that must never be left unsecured by an occupant.
5) Will the BEST 45H latch into the strike I already have in the frame?
The latchbolt is solid stainless steel with a 3/4 inch throw and the deadbolt throws 1 inch, both off a 2-3/4 inch backset, so it matches standard ANSI mortise strike prep. If your frame has a deeper lip-to-center condition, there is a 7/8 inch lip to center strike option to order with the lock. The faceplate is 8 x 1-1/4 x 1/16 inches and self-adjusts to the door bevel during install.
6) Is the BEST 45H Grade 1, and what grade of security does it carry?
The 45H meets ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, and Grade 2 for Security as built. To get Grade 1 Security you have to specify a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or the 1EK7K4 high security cylinder with sectional trim. If the spec on your drawing calls for Grade 1 Security straight out of the box, the 47H Series is the one that carries Grade 1 for Operational, Strength and Security. The 45H design also meets the intent of ANSI A117.1 section 404.2.6.
7) I need a classroom function mortise lock instead of storeroom - what should I order?
The BEST 45H body covered here is storeroom function, which keeps the outside lever locked and retracted by key only. For classroom function, the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset for 1-3/4 inch doors, and the Corbin Russwin ML2003 is a Grade 1 classroom mortise lockset in the ML2000 Series, also for 1-3/4 inch doors.
8) Is a Baldwin 6310 mortise lock a drop-in replacement for the BEST 45H storeroom body?
No. The BEST 45H uses a 2-3/4 inch backset, while the Baldwin 6310 entry/storeroom mortise lock body is a 2-1/2 inch backset unit for doors 1-3/8 inch and over. A different backset means a different mortise pocket location and a different trim bore centerline, so the door prep will not line up. If you are matching an existing 2-1/2 inch backset Baldwin opening, the 6310 knob by knob or the 6310190RRLS lever by lever version is the family to stay in.
9) For a behavioral health unit we need anti-ligature trim - is there a mortise lockset instead of the BEST 45H?
The BEST 45H is offered with UltraShield antimicrobial finishes in 626AM and 630AM for healthcare use, but its trim is conventional lever hardware. For ligature resistant openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the arch trim passage version in satin stainless, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant.
10) Which BEST 45H finish should I use in a hospital or long-term care facility?
For healthcare, BEST offers two antimicrobial options: 626AM, satin chrome with the UltraShield coating, and 630AM, satin stainless steel with UltraShield. The coating inhibits bacterial and microbial growth on the hardware surface. BEST recommends it anywhere cleanliness is a priority, including hospitals, elderly care, schools, transit, food service and hospitality. The standard non-AM equivalents (626 and 630) look identical on the door, so you can mix AM openings into an existing 626 or 630 building without a visible difference.
11) I need a Grade 1 storeroom mortise lock but not BEST keying. What else is there?
Two straight alternatives in the same function. The Cal-Royal NM8080 is a Grade 1 heavy duty storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option, and it ships as a complete lockset rather than a body only. The Accentra 8805FL is a Grade 1 storeroom mortise lock from the 8800 Series supplied with the Arcadia lever. Choose the 45H when you are already standardized on BEST small format interchangeable cores and want to key the opening into an existing system.
12) Can I get the BEST 45H storeroom lock with electric lock/unlock for an access control system?
No. The 45H storeroom body is purely mechanical, with no electrified option on it. If the opening is going on access control, look at a motorized or electrified mortise lock instead: the Command Access ML190 Series is a heavy duty storeroom-function motorized mortise lock with field selectable fail-safe/fail-secure operation on 24VDC, and the Schlage L9092EU with 03A trim is an electric-unlock mortise lock, keyed outside, with request-to-exit, running 12 or 24VDC.
13) We're standardizing a whole building on BEST 45H. Can I use the same body on classroom and passage doors?
No. This 45H body is built for storeroom function specifically, and function is determined by the lock body, not by the trim you hang on it. Doors needing other functions take a different 45H function body. If you are pulling other brands into the same building, the Cal-Royal NM8070 covers classroom and NM8440 covers privacy with a deadbolt, both Grade 1 for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty field reversible passage mortise lock. What carries across the whole 45H set is the 2-3/4 inch backset and the 5-7/8 x 7/8 x 4-1/16 inch case, so the door prep stays the same.
14) Does the BEST 45H storeroom lock have a deadbolt as well as a latch?
Yes. Alongside the 3/4 inch stainless latchbolt there is a stainless steel deadbolt with a 1 inch throw, and it is a double cylinder keyed arrangement. A stainless steel non-handed auxiliary bolt deadlocks the latch against carding. The armored front wraps both the latch and the deadbolt, which adds lateral strength and self-aligns during install.
15) What if the opening does not need a key at all - is there a non-keyed mortise lock in the same heavy duty class?
The BEST 45H storeroom body is keyed with an SFIC prep less core. For a non-keyed opening, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, the Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and the Hager 3810S is a Grade 1 passage mortise lock with rose and a 2-3/4 inch backset matching the 45H backset.
16) We want keypad access on this door rather than a key - what mortise lock replaces the 45H storeroom?
The BEST 45H is a keyed mechanical body. For credential access in the same mortise prep family, the Accentra nexTouch NTM623-NR is a Grade 1 mortise lock with a capacitive touchscreen keypad, no deadbolt, with cylinder override. The Dormakaba E-Plex 2066 is an electronic pushbutton keyless mortise lock for wide stile doors, and the Alarm Lock DL3500CR Trilogy is a Grade 1 electronic mortise lock with 300 user codes in classroom function for doors 1-5/8 to 1-7/8 inch thick.
17) Does the Sargent 4874 do the same job as the BEST 45H storeroom lock?
No. The BEST 45H storeroom body is a latching lock with a lever hub plus a 1 inch throw deadbolt in one case. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset - deadbolt only, with no latch and no lever hub, so it will not secure a door that needs a latching function. Use the 4874 as a supplementary bolt above a separate latch, not as a replacement for a storeroom lockset.
18) What is the closest option for a dorm or corridor door where the occupant needs to shut off outside access from the inside?
The BEST 45H storeroom body keeps the outside lever locked at all times, retracted by key, with no inside control over that state. For a corridor or dormitory opening where the occupant controls outside access, the Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock with rose trim and a single cylinder deadbolt.
19) We need privacy function on restroom and patient room doors, not storeroom - what heavy duty mortise lock fits?
The BEST 45H body is storeroom function and keyed, which is wrong for a privacy opening. For privacy, the Cal-Royal NM8440 is a heavy duty Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 to 2 inch thick, matching the 45H backset if you are standardizing door prep across a floor.
20) Is the Emtek 3106 Manhattan mortise entrance lockset an alternative to the BEST 45H?
No. The Emtek 3106 Manhattan and the related 3104 Hamilton and 3102 Memphis mortise entrance locksets are dummy function - they mount trim that does not operate a latch or bolt. The BEST 45H is a keyed storeroom lock body with a working latch and deadbolt. Use an Emtek dummy on an inactive leaf, not on the secured opening.
21) Can I use a cylindrical lock in place of the BEST 45H mortise lock?
Only if the door is prepped for it. The BEST 45H is a mortise lock requiring a 5-7/8 by 7/8 by 4-1/16 inch pocket cut into the door edge. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors and uses a bored prep instead, so swapping between the two means changing the door prep entirely. On a mortised door, stay with a mortise body.
22) We want wireless access control reporting on a storeroom door - what mortise lock covers that?
The BEST 45H is a mechanical body with no communications. For wireless credential management, the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a mobile enabled deadbolt with LED, Greenwich trim, right hand, with a 3 hour fire rating. The Alarm Lock DL1300NW Trilogy Networx is a wireless electronic mortise lock with keypad built for Adams Rite deadlatches, which is the choice for aluminum stile doors rather than a mortise pocket.
23) What office or entrance function mortise lock is the closest neighbor to the BEST 45H storeroom?
Storeroom keeps the outside lever locked at all times. If you need the outside lever to be lockable and unlockable for business hours, the Cal-Royal NM8050 is a heavy duty Grade 1 office/entrance mortise lockset with auxiliary deadlatch for 1-3/4 inch doors, and the Hager 3850E is a Grade 1 office mortise lock with lever and escutcheon, non-keyed, on a 2-3/4 inch backset matching the 45H.
24) What finishes does the BEST 45H mortise lock body come in for matching existing building hardware?
Fifteen finish choices, covering most existing standards: 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil-rubbed satin bronze, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 626AM satin chrome antimicrobial, 629 bright stainless, 630 satin stainless, 630AM satin stainless antimicrobial, and 690 statuary dark bronze. Two of them are living finishes by design: 613 wears to an antique look over time, and 690 stays a dark brown.
25) Are security head screws available on the BEST 45H, and when would I want them?
They are an order option on the 45H, yes or no at the time of purchase. Worth taking on openings where the hardware is exposed to the public or to tenants you do not control: dorms, school corridors, retail back-of-house, multifamily common areas. They resist someone backing the trim off the door with a standard driver. On secured staff-only areas behind another locked perimeter, standard screws are usually enough.
26) How well does the BEST 45H hold up on a high-traffic opening?
It is built as heavy duty for commercial use. The case, cover and armored front are 0.095 inch cold rolled steel, zinc dichromate plated against corrosion. The hub runs on a roller bearing mechanism for wear resistance, and the latch is a solid one-piece stainless anti-friction design, oil-impregnated, giving 50 percent more contact surface with the strike. That combination is aimed at openings cycled constantly, main corridors, service doors, school and healthcare traffic.
27) Is an RFID mortise lockset like the TownSteel FME-2000 interchangeable with the BEST 45H?
They serve different openings. The BEST 45H is a keyed mechanical storeroom body with SFIC prep. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the FME-4000 adds electronic intruder classroom function with RFID. Those are credential-based classroom locks, so the key system, function, and power considerations all change with the swap.
How fast can I get the BEST 45HCAW626 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the BEST 45HCAW626 come with a warranty?
Absolutely. The BEST 45HCAW626 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the BEST 45HCAW626?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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