BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,497.00
$862.22
BEST BEST 45H Series (A - Office Function) - Escutcheon Trim Heavy Duty Mortise Lock, Single Keyed BES-45H-A-ES

BEST 45H Series Heavy Duty Mortise Lock with Office Function and Escutcheon Trim

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Model: 45H7A3J626
$1,497.00
$862.22
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,497.00
$862.22
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BEST 45H Series Heavy Duty Mortise Lock with Office Function and Escutcheon Trim

Professional Grade Mortise Lock Solution

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with office function operation and escutcheon trim design. This ANSI A156.13 Grade 1 mortise lock features a solid one-piece stainless steel anti-friction latch with 50% more surface contact, 2-3/4" backset, and 0.095" cold rolled steel construction. Designed for doors 1-3/4" thick with an 8" H x 1-1/4" W x 1/16" T stainless steel faceplate that automatically adjusts to proper bevel during installation.

Professional Features & Benefits

  • Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch provides 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.
  • Heavy-Duty Construction: 0.095" cold rolled steel case, cover, and armored front with zinc dichromate plating for corrosion protection and exceptional durability.
  • Grade 1 Performance: ANSI A156.13 Series 1000 Grade 1 Operation and Strength, Grade 2 Security certification for demanding commercial applications.
  • Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening case, plus four position hub toggle design.
  • Enhanced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch with roller bearing hub mechanism for smooth operation.
  • Self-Aligning Installation: Armored front self-aligns with door bevel during installation and trim mechanism provides fast, easy, and accurate installation.
  • Cylinder Security: Solid machined cylinder rings with wavy washer provides resistance to wrenching, plus cylinder security screw prevents removal without first removing interchangeable core.
  • Visual Lock Indication: Locking toggle includes clear indication of "locked" and "unlocked" states with optional padlock icon indicators.

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), stile width, 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 2-3/4" backset configuration.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions for mortise lock installation.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications, utilizing the self-aligning trim mechanism.
  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 including locking toggle indication 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 solid stainless steel components rated for enhanced cycle life performance. ANSI A156.13 Grade 1 certification ensures dependable operation in demanding commercial applications. Engineered with roller bearing hub mechanisms and anti-friction latch technology where consistent, long-term performance is essential.

Product Specs

Series:
45H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Single 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
Product Attribute:
Mortise Locks
Electronic:
No
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 45H7A3J626 – Frequently Asked Questions

1) What does the A office function do on a BEST 45H mortise lock?
Office function means the outside lever is locked or unlocked by key from outside, or by the inside toggle, and the inside lever always retracts the latch for free egress. The 45H office lock is single cylinder keyed, so there is one key point on the outside face. The toggle carries a visible locked and unlocked indication, which is what most office and tenant suite doors need: the occupant sets it in the morning and keys it at night.
2) Does the BEST 45H mortise lock need to be ordered handed?
Handing has to be chosen at order (left hand, right hand, left hand reverse, right hand reverse), but the lock body itself is non-handed. The latchbolt is reversible and rotates 180 degrees without opening the case, and the hub uses a four position toggle design, so a lock that shows up on the wrong hand can be changed in the field rather than returned.
3) Does the BEST 45H mortise lock come with a cylinder or core?
It ships prepped for a BEST small format interchangeable core, less core. You order the core separately and key it into your existing SFIC system, which is the usual reason a facility standardizes on BEST in the first place. A cylinder security screw stops the cylinder being backed out until the core is pulled first.
4) What ANSI grade is the BEST 45H mortise lock, and what do I need to hit Grade 1 security?
The 45H is certified to ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, and Grade 2 for Security. With escutcheon trim, Grade 1 Security requires a drill resistant core (1CD, 1CDP, 1CDF or 1CDX). If the spec on the drawing calls for Grade 1 across the board including security, the 47H Series carries Grade 1 Operational, Strength and Security outright.
5) What mortise lock should be used instead of the BEST 45H office function on a classroom door?
Office function locks are not the right choice for a classroom opening. The Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with an auxiliary deadlatch for 1-3/4 inch doors, and the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series, also for 1-3/4 inch doors. Both match the BEST 45H on Grade 1 mortise construction and on the 1-3/4 inch standard door thickness, and change only the function. For classrooms that need visual status at the door, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with an ANSI strike and a steel escutcheon measuring 8-1/2 inch H x 2-3/4 inch W x 7/16 inch.
6) What is the closest equivalent to a BEST 45H office function mortise lock from another manufacturer?
The Cal-Royal NM8050 is a heavy duty Grade 1 office/entrance mortise lockset with an auxiliary deadlatch, sized for 1-3/4 inch doors. The BEST 45H is also a heavy duty Grade 1 mortise lock with an office function, single cylinder keyed, and a standard configuration for 1-3/4 inch doors. The Hager 3850E is another office function mortise lock with a lever and escutcheon on a 2-3/4 inch backset, matching the 45H backset and escutcheon trim approach, but the 3850E is non-keyed while the 45H is keyed single cylinder. If the opening needs a keyed office function, the NM8050 is the direct swap; the 3850E fits where no key is required on the office trim.
7) Which mortise lock replaces a BEST 45H office function when the room needs to stay locked at all times?
An office function unlocks from the inside lever and can be left unlocked with the toggle, which is not what a storeroom opening wants. The Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors, which lines up with the BEST 45H being supplied with an SFIC prep less core. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever. Both keep the outside lever locked at all times and are keyed entry only.
8) Can a Baldwin 6301 mortise lock body go into a door prepped for a BEST 45H?
No, not without re-prepping the door. The Baldwin 6301 entry/apartment mortise lock body uses a 2-1/2 inch backset, and the 6310 entry/storeroom body is also 2-1/2 inch backset. The BEST 45H is a 2-3/4 inch backset lock, so the cylinder and lever centerlines fall a quarter inch apart and the mortise pocket depth differs. For a mortise body that drops into the same 2-3/4 inch backset prep, look at the Hager 3800 Series bodies such as the 3850E office function or the 3810E passage, both on a 2-3/4 inch backset.
9) Which mortise lock should be specified instead of the BEST 45H for a behavioral health or ligature resistant opening?
The BEST 45H uses lever and knob trim styles including solid tube levers, curved levers, gull wing and a round knob, which present a graspable projection at the door. Where ligature resistance governs, the TownSteel MRX-L-01 is a Grade 1 heavy duty anti-ligature lever mortise lockset in stainless steel with a passage function for 1-3/4 inch doors, and the MRX-A-01 is a satin stainless steel ligature resistant arch trim mortise lockset, also passage function. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset described as ligature resistant and ADA compliant in satin stainless steel. All three are passage function, so a keyed opening still needs a separate solution.
10) Which mortise lock replaces a BEST 45H when the door has to release for egress from a dormitory corridor?
The Sargent 7925 is a heavy duty Grade 1 dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. It matches the BEST 45H on Grade 1 heavy duty mortise construction and single cylinder keying, and changes the function to corridor/dormitory with the deadbolt releasing on inside lever operation. Note the trim: the 7925 is a rose trim lock, while the 45H described here is built with escutcheon trim in wrought, forged, and forged concealed cylinder styles.
11) Which mortise lock takes the place of a BEST 45H when the opening needs to be electrically locked and unlocked from an access control panel?
The Command Access ML190 Series is a heavy duty motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC in a storeroom function. The Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, on 12/24VDC for 1-3/4 inch doors, in a corridor function. Both replace the mechanical operation of the BEST 45H office function with panel control and require power transfer to the door leaf, which the 45H does not.
12) I have a door thicker than 1-3/4 inches. Is there a mortise lock that covers a thickness range?
For a range without special ordering, the Hager 3800 Series covers 1-3/4 to 2-1/2 inches: the 3810E passage with escutcheon and the 3850E office lock both list that range on a 2-3/4 inch backset. The BEST 45H handles thick doors too, up to 5 inches, but as a made-to-order configuration where the thickness is called out on the purchase order rather than adjusted in the field.
13) Is the BEST 45H mortise lock ADA compliant for accessible openings?
BEST states the design and operation of the mortise lock meets the intent of ANSI A117.1 section 404.2.6, the accessible door hardware operation clause. Pair that with a lever rather than the 4 round knob if the opening has to be accessible, since a knob requires grasping and twisting.
14) What escutcheon trim options does the BEST 45H come in, and what is the difference?
Three escutcheon trims: J wrought, M forged, and N forged with a concealed cylinder. The N hides the cylinder behind the plate, which is what you want where a visible core is a target or where the architect wants a clean face. Lever choices run seven ways, including 12 solid tube with no return, 3 solid tube with return, 4 round knob, contour with angle return, curved with and without return, and gull wing.
15) Is there a BEST mortise lock finish suitable for a hospital or long term care facility?
Two antimicrobial finishes are offered: 626AM satin chrome and 630AM satin stainless, both with the BEST UltraShield coating that inhibits growth of bacteria and other microbes on the hardware surface. BEST calls these out for healthcare, elderly care, education, transportation, food service and hospitality. Standard, non-AM finishes run twelve more options from 605 bright brass through 690 dark bronze.
16) I need to match the dark bronze on the rest of my building. Which BEST 45H finishes change appearance over time?
Two behave differently from the rest. The 613 oxidized satin bronze oil rubbed finish is meant to wear over time into an antique look, so a lock installed this year will not match one installed five years ago on an adjacent door. The 690 dark bronze coated finish stays a dark brown appearance over time. If you are adding to an existing fleet of dark bronze openings and want consistency, 690 is the stable one.
17) Can I get the BEST 45H mortise lock with a keypad or card reader?
No. The 45H is purely mechanical, keyed with a small format interchangeable core. If the opening needs credentials or an audit trail, the electronic mortise options are a different product: the Alarm Lock DL3500CR Trilogy is a Grade 1 electronic mortise lock with 300 user codes in classroom function, the Schlage CO-100 is a Grade 1 standalone electronic mortise for 1-3/4 inch doors, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise with RFID. For electrified control of a mechanical mortise body instead, the Command Access ML190 Series is a motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC.
18) Is there a simpler non-keyed mortise lock to pair with a BEST 45H on the same run of doors?
Yes. The BEST 45H is keyed with a single cylinder, so openings on the same corridor that do not need a key take a passage or privacy body instead. The Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors. The Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation in the MA Series and carries a fire rating. For bathrooms and bedrooms, the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with a deadbolt for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset matching the 45H backset.
19) What are the electronic alternatives to a BEST 45H mortise lock for an opening that needs access control?
The BEST 45H is a mechanical, non-electronic mortise lock keyed with a single cylinder. Where the opening needs credentials or codes instead, the Schlage CO-100 is a standalone electronic mortise lock with a keypad reader, Grade 1 and heavy duty for 1-3/4 inch doors. The TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID. The Accentra nexTouch NTM623-NR is a Grade 1 mortise lock with a capacitive touchscreen keypad, no deadbolt, with cylinder override. For networked control, the Alarm Lock DL1300NW Trilogy is a Networx wireless electronic mortise lock with a keypad for Adams Rite deadlatches. Each of these changes the door prep and the power or credential plan, so they are a project decision rather than a like-for-like swap.
20) Does a Sargent 130KB thumbturn or a Sargent 4874 deadbolt substitute for a BEST 45H mortise lock?
No. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the 130W is a mortise thumbturn with a round backplate in the 7800 Series - both are trim pieces, not lock bodies. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset, which throws a bolt but gives no latch and no lever operation. The BEST 45H is a complete keyed mortise lock body with a 3/4 inch stainless steel latchbolt and a 1 inch deadbolt throw, operated by lever trim. If the opening needs latching and lever operation, none of those three fills the mortise pocket on their own.
21) What is the difference between a BEST 45H office function lock and an Emtek 3102 Memphis mortise entrance lockset?
They are not the same class of product. The Emtek 3102 Memphis, 3104 Hamilton, 3106 Manhattan and 3019 Brisbane brass mortise entrance locksets are all dummy function - decorative trim with no working latch or keyed operation. The BEST 45H is a commercial keyed single cylinder mortise lock with an office function and heavy duty rating. A dummy set is what goes on the inactive leaf of a pair; it does not secure or latch an opening. The Schlage L0170 is a Grade 1 heavy duty mortise half dummy trim in the L Series if a commercial-looking dummy is what the pair of doors actually needs.
22) Which mortise locks work on doors thinner than the 1-3/4 inch a BEST 45H is built for?
The BEST 45H standard configuration is for 1-3/4 inch doors, with a thick door configuration available up to 5 inches when the thickness is specified on the order. Below that range, the Marks USA 21AC and 22AC entrance double cylinder ornamental iron mortise locks with round knob are built for 1 inch doors, which suits narrow ornamental iron gate and storefront leaves. The Alarm Lock DL2700CR and DL3500CR Trilogy electronic classroom mortise locks cover a 1-5/8 inch to 1-7/8 inch door thickness range, which reaches slightly below 1-3/4 inch.
23) For a healthcare facility standardizing on one mortise lock, how does the BEST 45H compare with the Grade 1 alternatives?
The BEST 45H is ANSI A156.13 Series 1000 Grade 1 Operation and Strength with Grade 2 Security, and reaches Grade 1 Security when a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) is used with escutcheon trims. It is also offered in 626AM satin chrome and 630AM satin stainless with UltraShield antimicrobial coating, which BEST recommends for hospital, elderly care and food service applications. Among the Grade 1 peers, the Corbin Russwin ML2003 classroom and the Cal-Royal NM8050 office/entrance are mechanical Grade 1 mortise locks for 1-3/4 inch doors, and the Marks USA 5PDN is a Grade 1 hospital passage push/pull paddleset in satin stainless steel. The antimicrobial finish option is what separates the 45H within that group.
24) How durable is the BEST 45H mortise lock case for a high traffic entrance?
The case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion resistance, and there are four case cover screws, one at each corner, plus an interlocking armored front and cover at the latch. The hub runs on a roller bearing. The latchbolt is solid one piece stainless with 50 percent more contact surface against the strike and is oil impregnated for anti-friction operation. It is rated heavy duty and commercial.
25) Do I have to cut the door face to the bevel for a BEST 45H mortise lock?
No bevel machining on the lock face is needed. The armored front self-aligns with the door bevel as it is installed, so the 8 x 1-1/4 x 1/16 inch stainless faceplate sits flat on either a square or bevelled edge. The trim mechanism is also self-aligning, which is what keeps the escutcheon square without shimming.
How fast can I get the BEST 45H7A3J626 delivered?
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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 45H7A3J626 come with a warranty?
Absolutely. The BEST 45H7A3J626 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 45H7A3J626?
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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