BEST 45H Series Heavy Duty Mor...
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$1,513.00
$936.60
BEST BEST 45H Series (C - Entrance Function) - Escutcheon Trim Heavy Duty Mortise Lock, Double Keyed BES-45H-C-ES

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

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Model: 45H7C3J626
$1,513.00
$936.60
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Selected Trim Style is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,513.00
$936.60
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BEST 45H Series Heavy Duty Mortise Lock with Entrance Function and Escutcheon Trim

Professional-Grade Commercial Mortise Lock Solution

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with entrance function operation and double cylinder keying. Featuring a 2-3/4" backset and 8" H x 1-1/4" W x 1/16" T stainless steel faceplate, this mortise lock is engineered from 0.095" cold rolled steel for exceptional durability. ANSI A156.13 Series 1000 Grade 1 Operation and Strength certified with Grade 2 Security rating for demanding commercial applications.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front provide superior strength and durability for high-traffic commercial environments.
  • Enhanced Latch Design: Solid one-piece stainless steel anti-friction latch offers 50% more surface contact with strike for superior strength and security with precision-engineered curve for enhanced cycle life.
  • 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: Roller bearing hub mechanism provides smooth, wear-resistant operation with lever return spring mechanism 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 Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch for maximum structural integrity.
  • ANSI Grade 1 Certified: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength with Grade 2 Security rating for commercial applications.
  • Cylinder Security Features: Solid machined cylinder rings with wavy washer provides resistance to wrenching, plus cylinder security screw prevents removal without first removing interchangeable core.

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.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function 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 demanding commercial applications. ANSI A156.13 Series 1000 Grade 1 certification ensures consistent performance and durability. Engineered for high-traffic commercial environments where dependable security and smooth operation 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:
Entrance
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Entrance/Office
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 45H7C3J626 – Frequently Asked Questions

1) Will the BEST 45H mortise lock fit a 1-3/4 inch commercial door?
Yes. The standard 45H lock configuration is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, BEST builds a thick door configuration that covers doors up to 5 inches, but you have to specify the actual door thickness when you order it. There is no field adjustment for that, so measure the door before the order goes in.
2) What do I need to specify when ordering a BEST 45H mortise lock?
Four things decide the part: finish (fourteen choices, including the 626AM and 630AM antimicrobial options), lever style (seven, from solid tube and curved levers to round knob and gull wing), escutcheon trim (J wrought, M forged, or N forged with concealed cylinder), and door thickness if the door is anything other than 1-3/4 inches, up to 5 inches. Cores are ordered separately since the lock comes SFIC prepped less core. Handing does not need calling out, the lock body is non-handed.
3) What does entrance function mean on the BEST 45H, and how does it operate?
Entrance/office function with double cylinder keying: the lock is keyed on both sides. On the 45H that gives you a deadbolt for positive lockdown plus the latchbolt for normal traffic, with key control from either face. Deadbolt throw is 1 inch, latchbolt throw is 3/4 inch. If you want a function where the outside lever is always locked and the inside always releases, that is a storeroom lock, not this one.
4) Does the BEST 45H come with a cylinder or core?
No core is included. The 45H ships with SFIC prep less core, so the lock is machined to accept a BEST small format interchangeable core and you supply the core keyed to your system. That is what makes it worth having on a masterkeyed building: the locksmith drops in cores from the existing system without rekeying anything mechanical. Budget the cores separately when you price the job.
5) I need a mortise lock for a classroom door, not an office door. What should I order instead of the BEST 45H entrance function?
The BEST 45H covered here is built with entrance/office function and double cylinder keying, which is not classroom function. For a classroom opening, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series for 1-3/4 inch doors, and the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with auxiliary deadlatch, also for 1-3/4 inch doors. Both keep you in a Grade 1 mortise body on the same door prep while giving you the classroom function the door schedule calls for.
6) What is the closest equivalent to a BEST 45H entrance function mortise lock from another manufacturer?
The Cal-Royal NM8050 is a heavy duty Grade 1 mortise lockset with an entrance/office function and an auxiliary deadlatch, which matches the entrance/office function of the BEST 45H. The NM8050 is specified for 1-3/4 inch doors. The BEST 45H is a heavy duty commercial mortise lock with a 2-3/4 inch backset and entrance function, and its standard configuration is built for 1-3/4 inch doors with a thick door configuration available up to 5 inches. If the opening is a standard 1-3/4 inch commercial door and entrance function is what the schedule calls for, the two are functionally interchangeable at the door.
7) Is the Sargent 4874 double cylinder mortise deadbolt the same thing as a BEST 45H double cylinder entrance lock?
No. The Sargent 4874 is a double cylinder mortise deadbolt in the 4870 Series with a 2-3/4 inch backset - a deadbolt only, with no latch and no lever or knob operation. The BEST 45H is a full entrance function mortise lockset with double cylinder keying, a 3/4 inch throw stainless steel latchbolt and a 1 inch throw deadbolt in the same case, operated by a lever or knob. The two share a 2-3/4 inch backset, but a 4874 will not latch the door or carry trim. Order it only when you want a deadbolt beside separate passage hardware, not as a replacement lockset.
8) For a storeroom door in the same building as my BEST 45H entrance locks, what mortise lock matches?
The BEST 45H is entrance/office function, which lets the inside lever stay free while the outside is keyed. A storeroom opening wants the outside lever always locked. The Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever, and the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option for 1-3/4 inch doors. The NM8080 interchangeable core option is worth noting if you are keying the building on small format cores, since the 45H ships with SFIC prep less core.
9) Can a Marks USA 21AC or 22AC entrance double cylinder mortise lock replace a BEST 45H?
Not on a standard commercial door. The Marks USA 21AC Unilock and 22AC entrance double cylinder ornamental iron mortise locks are both specified for 1 inch door thickness, which is ornamental iron and narrow stile territory. The BEST 45H standard configuration is designed for 1-3/4 inch doors, with a thick door configuration available up to 5 inches. Both are double cylinder entrance locks by function, so the 21AC and 22AC are the right call on a 1 inch iron gate or storefront style door and the 45H is the call on a full thickness commercial door.
10) Will the 3/4 inch latchbolt on the BEST 45H catch my existing mortise strike?
A 3/4 inch latchbolt throw and a 1 inch deadbolt throw are the standard ANSI mortise figures, so an existing ANSI strike with the correct lip projection will catch it. The latch itself is a solid one-piece stainless anti-friction design with roughly 50 percent more contact surface against the strike than a conventional latch, so alignment on a slightly racked frame is more forgiving. If you are replacing a lock in an existing frame, check the strike box depth clears a full 1 inch of deadbolt.
11) What escutcheon trim options does the BEST 45H offer, and what is the difference?
Three escutcheon trims: J wrought escutcheon, M forged escutcheon, and N forged escutcheon with concealed cylinder. The N hides the cylinder behind the plate, which is what people specify where they do not want the core visible or reachable on the public side. Lever choices run to seven, including 3 solid tube with return, 12 solid tube without return, 4 round knob, contour with angle return, curved with and without return, and gull wing. Levers with a return are the usual pick where a facility follows accessibility guidance on protruding hardware.
12) Which BEST 45H finish should I use in a hospital or school?
Two antimicrobial options exist: 626AM satin chrome and 630AM satin stainless, both with the UltraShield coating that inhibits growth of bacteria and other microbes on the hardware surface. BEST recommends those wherever cleanliness is a priority, healthcare, elderly care, education, transportation, food service and hospitality. If antimicrobial is not required, 630 satin stainless is the standard institutional finish and matches most existing commercial hardware.
13) How is the BEST 45H different from a Cal-Royal NM8050 entrance mortise lock?
Both are Grade 1 entrance/office mortise locks. The Cal-Royal NM8050 is listed for 1-3/4 inch doors only, while the BEST 45H covers 1-3/4 inch as standard and can be ordered in a thick door configuration to 5 inches. The other real difference is keying: the 45H comes prepped for a small format interchangeable core with the core supplied separately, which matters if the building already runs a BEST SFIC masterkey system. If it does not, the Cal-Royal is a straightforward conventional-cylinder alternative.
14) Is a mortise lock like the BEST 45H the right choice, or should I use a cylindrical lock?
A mortise lock takes a routed pocket in the door edge, and in exchange you get a separate deadbolt and latchbolt in one body, 0.095 inch cold rolled steel case, cover and armored front, and a much higher cycle life on heavy traffic openings. That is why it is the standard on commercial entrances. If the door is only bored for a cylindrical lock and you do not want to mortise it, a cylindrical lock such as the Schlage PC10 Grade 1 is the substitution, but you give up the deadbolt. Mortising an existing door in the field is real work, so match the lock to the prep already in the door unless you are replacing the door too.
15) Will the BEST 45H hold up on a high traffic entrance without the lever drooping?
Lever droop is handled two ways on the 45H. The hub runs on a roller bearing mechanism for smooth, wear resistant operation, and the trim carries its own lever return spring rather than relying on the lock body spring. The case is 0.095 inch cold rolled steel, zinc dichromate plated for corrosion protection, with four cover screws at each corner and the armored front interlocking with the cover at the latch. The armored front wraps both latch and deadbolt, which adds lateral strength where a pried door puts load.
16) How is the cylinder protected from being wrenched or pulled on the BEST 45H?
Solid machined cylinder rings with a wavy washer resist wrenching, and a cylinder security screw prevents the cylinder being removed until the interchangeable core is pulled first. Since the core is keyed to your system, that means an attacker without a key cannot back the cylinder out. On escutcheon trim, adding a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) takes the assembly to Grade 1 Security.
17) Is there a mortise lock like the BEST 45H that can be released from an access control system?
The BEST 45H is a mechanical lock with no electrical option. If the entrance door has to release from a card system or an access panel, the Command Access ML190 is a heavy duty motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC in storeroom function, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit and 12/24VDC, in corridor function for 1-3/4 inch doors. Both put an electrified body in a mortise pocket; confirm the function change from entrance/office before you spec either.
18) What is a simpler alternative to a BEST 45H if the door does not need to be keyed?
The BEST 45H is a keyed mortise lock with double cylinder keying, so if the opening never locks you are paying for cylinder hardware you will not use. For a non-keyed mortise opening, the Schlage PM010 is a Grade 1 passage latch mortise lock for 1-3/4 inch doors, and the Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series with field reversible operation and a fire rating. The Hager 3810E is a Grade 1 passage mortise lock with escutcheon trim and a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch, which keeps both the escutcheon trim style and the backset of the 45H while dropping the cylinder.
19) What mortise lock should I use instead of a BEST 45H if I need keypad or credential access?
The BEST 45H is a mechanical, non-electronic mortise lock. For an electrified opening on the same mortise prep, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for doors 1-5/8 inch to 1-7/8 inch, the Schlage CO-100 is a Grade 1 heavy duty standalone electronic mortise lock with a keypad reader in privacy function for 1-3/4 inch doors, and the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors. Choose by function first, since these carry classroom and privacy functions rather than the entrance/office function of the 45H.
20) Are the Emtek mortise entrance locksets a substitute for a BEST 45H?
No. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are all dummy function - trim only, with no working latch or cylinder. The BEST 45H is a keyed heavy duty commercial mortise lock with entrance function. Use the Emtek dummy sets on an inactive leaf where the 45H would have no job to do; do not order one expecting it to secure the opening.
21) What mortise lock takes the place of a BEST 45H on a restroom or patient room where privacy is needed?
The 45H is a keyed entrance lock and is not a privacy set. For privacy openings, 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 inch to 2 inch. The Hager 3840S carries the same 2-3/4 inch backset as the 45H. In a healthcare setting the 45H is also offered in 626AM satin chrome and 630AM satin stainless with UltraShield antimicrobial coating, which is a consideration if you are standardizing finishes across keyed and privacy doors.
22) Which mortise lock do I use instead of a BEST 45H on a dormitory or corridor door where the occupant needs to lock behind them?
The BEST 45H entrance function keys the outside and leaves the inside free. For a dormitory or corridor opening, 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. The 7925 comes with rose trim rather than escutcheon, so if you are matching the escutcheon look of the 45H doors, expect a different trim footprint on the door face.
23) I need a classroom security indicator lock to match my BEST 45H doors. What is available?
The Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset in the LA318 Series for 1-3/4 inch doors, supplied with an ANSI strike and a steel escutcheon measuring 8-1/2 inch H x 2-3/4 inch W x 7/16 inch. It gives you the visual locked/unlocked indicator that the BEST 45H entrance function does not carry. Both are escutcheon trim locks on 1-3/4 inch doors, so the door face treatment stays similar, though the LA318GJ escutcheon is a different size from the 45H faceplate footprint of 8 inch H x 1-1/4 inch W.
24) Which mortise lockset should I specify instead of a BEST 45H in a behavioral health or ligature resistant application?
The BEST 45H uses conventional levers and knobs including solid tube and gull wing styles, which are not ligature resistant. For those openings the TownSteel MRX-A-01 is a Grade 1 heavy duty satin stainless steel ligature resistant arch trim mortise lockset in passage function for 1-3/4 inch doors, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset in the 195 Series, ligature resistant and ADA compliant in satin stainless steel. All three are passage function, so plan a different device where the opening must lock.
25) My opening needs a fire rated mortise lock. Which comparable locks carry a fire rating?
Among mortise locks in the same class, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock in the MA Series with a fire rating and field reversible operation. The Schlage Electronics LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 3 hour fire rating, 125kHz proximity reader and Greenwich trim in right hand, and the LEBMB-ADD is a Grade 2 mobile enabled mortise lock with a 3 hour fire rating in privacy, office and apartment functions. Note the function difference from the BEST 45H entrance function before substituting - the MA101 is passage and the LEMD is a credential lock.
26) Which BEST 45H finish holds its appearance and which one changes over time?
Fourteen finishes are offered, from 605 bright brass through 630 satin stainless. Two behave differently once installed: 613 oxidized satin bronze oil rubbed is meant to wear over time into an antique appearance, and 690 dark bronze continues as a dark brown. If you are matching openings across a building and want them to still match in five years, avoid 613. Coated brass base finishes include 618, 619, 622, 625 and 626; 629 and 630 are stainless steel through and through.
27) I need a matching mortise lock in passage or privacy function for the rest of the building. What pairs with a Grade 1 entrance mortise lock?
The 45H covers the keyed entrance openings. For the non-keyed doors in the same building, 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 passage latch mortise lock for 1-3/4 inch doors, and for restrooms the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors. All three are mortise bodies, so the door prep stays consistent across the building.
How fast can I get the BEST 45H7C3J626 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 45H7C3J626 come with a warranty?
Absolutely. The BEST 45H7C3J626 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 45H7C3J626?
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