BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$340.00
$229.29
BEST 45H Series Heavy Duty Mortise Lock Body with Classroom Deadlock Function

BEST 45H Series Heavy Duty Mortise Lock Body with Classroom Deadlock Function

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Model: 45HCARD626
$340.00
$229.29
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$340.00
$229.29
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BEST 45H Series Heavy Duty Mortise Lock Body with Classroom Deadlock Function

Professional Grade Mortise Lock Solution for Educational Facilities

The BEST 45H Series mortise lock body delivers heavy-duty performance with classroom deadlock (RD) function for educational and commercial applications. This field-reversible lock body features a 2-3/4" backset, 1" deadbolt throw, and 3/4" latchbolt throw in a robust 0.095" cold rolled steel case measuring 5-7/8" H x 7/8" D x 4-1/16" W. ANSI A156.13 Series 1000 Grade 1 Operation and Strength certified with Grade 2 Security rating for reliable institutional use.

Professional Features & Benefits

  • Heavy-Duty Steel Construction: 0.095" cold rolled steel case, cover, and armored front provide exceptional durability with zinc dichromate plating for corrosion protection.
  • 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 extended cycle life.
  • Field-Reversible Operation: Reversible latch rotates 180 degrees for easy handing change without opening case, with four-position hub toggle design for flexible configuration.
  • Reinforced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch provide maximum structural strength.
  • Smooth Operation Mechanism: Roller bearing hub mechanism ensures wear-resistant operation with lever return spring mechanism in trim for enhanced protection against lever droop.
  • Security Features: Solid machined cylinder rings with wavy washer provide wrenching resistance, while cylinder security screw prevents core removal without proper access.
  • ANSI Compliance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength, Grade 2 Security standards for institutional applications.
  • Antimicrobial Options: Available with UltraShield antimicrobial protected coating (626AM, 630AM) for healthcare and educational environments.

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), mortise pocket dimensions, and handing requirements.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for the 8" H x 1-1/4" W faceplate.
  3. Prepare door mortise pocket to accommodate the 5-7/8" H x 7/8" D x 4-1/16" W case dimensions with proper clearances for operation.
  4. Install the lock body into the mortise pocket and secure with appropriate fasteners per manufacturer torque specifications.
  5. Configure the four-position hub toggle design for desired operation (always locked, always unlocked, or locked by key) and adjust latch rotation if handing change is required.
  6. Test lock operation including 1" deadbolt throw and 3/4" latchbolt throw to verify proper alignment and smooth function. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

  • Educational Facilities and Classrooms
  • Commercial Office Buildings
  • Healthcare Institutions
  • Government and Municipal Buildings
  • Multi-Tenant Residential Properties
  • Industrial and Warehouse Facilities
  • Institutional Buildings

Antimicrobial Protection Option

The BEST UltraShield finish with antimicrobial protected coating (available in 626AM satin chrome and 630AM satin stainless steel) inhibits the growth of bacteria and other microbes on hardware surfaces. Recommended for healthcare, elderly care, education, transportation, food-service, and hospitality applications where product cleanliness is a high priority.

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 engineered for demanding commercial applications. The precision-engineered anti-friction latch design provides enhanced cycle life with reduced wear, while ANSI A156.13 Grade 1 certification ensures dependable performance where institutional security 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
Lock Function:
Classroom Deadlock
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Classroom
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 45HCARD626 – Frequently Asked Questions

1) Does the BEST 45H classroom mortise lock come with levers, trim, and a core, or is it just the lock body?
What ships is the lock body only. The 45H classroom deadlock body is prepped for a small format interchangeable core and comes less core, so you order the trim (lever or knob with rose or escutcheon), the SFIC core, and the strike separately. Budget for all of those on the purchase order or the opening won't be complete.
2) Will the BEST 45H mortise lock fit a 1-3/4 inch 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 you have to state the actual door thickness when you place the order. The lock is not field-adjustable across that range.
3) What does the RD classroom deadlock function on the BEST 45H actually do at the door?
Classroom deadlock means the outside lever is locked or unlocked by key, and there is a separate 1 inch stainless deadbolt thrown by key as well. The 3/4 inch latchbolt handles normal traffic. It is a single cylinder setup, so all locking is done from the key side, not from inside the room. If you need staff to lock the door from inside during a lockdown without opening it, this function is the wrong choice.
4) Do I have to specify handing when ordering a BEST 45H mortise lock body?
Handing is a required selection: right hand, left hand, right hand reverse bevel, or left hand reverse bevel. That said, the lock body is field reversible. The latch rotates 180 degrees without opening the case, and the hub has a four position toggle, so if a door gets rehung or the wrong hand arrives on site you can correct it at the opening.
5) Is the BEST 45H Grade 1, 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, with a Grade 2 Security rating as standard. To reach Grade 1 Security you have to add hardware: a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or the 1EK7K4 high security cylinder with sectional trim. If your spec calls for Grade 1 across the board including security, BEST's 47H Series carries Grade 1 for operation, strength and security without those additions.
6) What is a mechanical equivalent to the BEST 45H classroom mortise lock from another manufacturer?
The closest mechanical cross-brand match for the BEST 45H classroom deadlock mortise lock body is the Corbin Russwin ML2003, a Grade 1 mortise classroom lockset in the ML2000 Series rated for 1-3/4 inch doors. The Cal-Royal NM8070 is another Grade 1 classroom mortise lockset for 1-3/4 inch doors. The key difference in scope: the BEST 45H is supplied as a lock body only with SFIC prep less core, so trim and core are ordered separately, while the Corbin Russwin and Cal-Royal items are complete locksets.
7) I need classroom security with lockdown from inside the room - what should I use instead of a standard classroom mortise lock?
For classroom security lockdown, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset 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. The BEST 45H classroom deadlock body is keyed single cylinder and is operated by key rather than by an inside indicator lockdown function.
8) Is there a credential-based classroom mortise lock if we want to move off keys?
Yes. The TownSteel FME-2000 Series is a Grade 1 heavy duty classroom mortise lockset with RFID technology for 1-3/4 inch doors, and the FME-4000 Series adds electronic intruder classroom function with RFID. Alarm Lock also offers keypad classroom mortise locks: the DL2700CR and DL3500CR, both Grade 1 classroom function for doors 1-5/8 inch to 1-7/8 inch. The BEST 45H is a non-electronic mechanical lock body.
9) Will a Baldwin 6301 or 6310 mortise lock body drop into the same prep as the BEST 45H?
No. The Baldwin 6301 entry/apartment and 6310 entry/storeroom mortise lock bodies are built on a 2-1/2 inch backset, while the BEST 45H uses a 2-3/4 inch backset. The Baldwin 6301 is listed for doors 1-3/4 inch and over and the 6310 for 1-3/8 inch and over. Because the backset differs, the door prep and cylinder location are not interchangeable between them.
10) We need the classroom door tied into access control with remote lock and unlock - what replaces a mechanical 45H?
For an access-controlled opening, the Command Access ML190 Series is a heavy duty motorized mortise lock with field selectable EL/EU operation on 24VDC, and the Schlage L9092EU with 03A trim is a heavy duty electric lock/unlock outside lever mortise lock, keyed outside, with request to exit, running 12/24VDC on 1-3/4 inch doors. Both require power to the opening; the BEST 45H is a non-electronic mechanical body.
11) Which finish should I pick for a hospital or school corridor?
For healthcare, elderly care, education, food service and hospitality, BEST offers two UltraShield antimicrobial coated finishes, 626AM satin chrome and 630AM satin stainless steel, which inhibit bacterial growth on the hardware surface. Outside those environments the 45H is offered in 605 bright brass, 606 satin brass, 611 bright bronze, 612 satin bronze, 613 oil rubbed bronze, 618 bright nickel, 619 satin nickel, 622 matte black, 625 bright chrome, 626 satin chrome, 629 bright stainless, 630 satin stainless and 690 dark bronze. Note 613 is meant to wear to an antique look over time, so it is a poor choice if you are matching new to existing.
12) What are the extra options on the BEST 45H order form for, like security head screws and the 7/8 inch lip strike?
Two add-ons get selected with the lock. Security head screws are for openings where you want to resist tampering at the faceplate. The 7/8 inch lip-to-center strike matters when your frame and stop geometry need a longer lip so the latch projects clear and the door edge doesn't catch, common on doors with heavy weatherstrip or unusual jamb depth. If neither applies, the standard strike package is fine.
13) How is the BEST 45H different from an electronic classroom mortise lock like the TownSteel FME-2000 or Alarm Lock DL3500CR?
The 45H is purely mechanical, keyed, with no electronics. Credential management is done with keys and cores. TownSteel's FME-2000 Series is a Grade 1 classroom mortise lockset with RFID for 1-3/4 inch doors, and Alarm Lock's DL3500CR is a Grade 1 classroom electronic mortise lock with 300 user codes for doors 1-5/8 to 1-7/8 inches thick. Choose electronic if you need code or card audit and easy rekeying by software; choose the 45H if the building is already on a BEST interchangeable core keying system and you want no batteries in the door.
14) What other mechanical Grade 1 classroom mortise locks could I use instead of the BEST 45H?
Two straight mechanical alternatives: the Corbin Russwin ML2003 is a Grade 1 classroom mortise lockset for 1-3/4 inch doors, and the Cal-Royal NM8070 is a Grade 1 heavy duty classroom mortise lockset with auxiliary deadlatch, also 1-3/4 inch. If you want a visual indicator so staff can see the door is secured, Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset for 1-3/4 inch doors. The difference with the 45H is that it ships as a lock body prepped for a BEST small format interchangeable core, which matters if the facility is already keyed that way.
15) Will the 1 inch deadbolt and 3/4 inch latch on the BEST 45H work with my existing ANSI strike?
The deadbolt throws 1 inch and the latchbolt 3/4 inch, both stainless, at a 2-3/4 inch backset. If the frame already carries a standard ANSI mortise strike with the correct pocket depth for a 1 inch bolt, it will latch and bolt. Shallow strike boxes are the usual failure point, since the deadbolt needs the full inch of clear depth behind the lip. There is also a stainless non-handed auxiliary bolt that deadlocks the latch against carding.
16) The opening is a storeroom, not a classroom - what mortise lock do I order instead of the 45H classroom deadlock?
For a storeroom opening, the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series supplied with an Arcadia lever, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option. The BEST 45H body carries classroom deadlock function, which is a different keyed operation than storeroom.
17) What mortise lock should I use for an office or entrance door rather than a classroom door?
For an office or entrance opening, the Cal-Royal NM8050 is a 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 on a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch, non-keyed. The BEST 45H shares the 2-3/4 inch backset but is a keyed classroom deadlock body.
18) We need a non-keyed passage or privacy mortise lock on the same door prep - what are the options?
For non-keyed openings, the Schlage PM010 is a Grade 1 passage latch mortise lock for 1-3/4 inch doors, the Falcon MA101 is a Grade 1 heavy duty mortise passage lock with field reversible operation and a fire rating, and the Hager 3810S is a Grade 1 passage mortise lock with rose on a 2-3/4 inch backset. For privacy, the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt and the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset. The BEST 45H is keyed.
19) Does a Sargent 4874 mortise deadbolt do the same job as the 45H classroom deadlock?
No. The Sargent 4874 is a double cylinder mortise deadbolt on a 2-3/4 inch backset in the 4870 Series - deadbolt only, with no latchbolt or lever function. The BEST 45H classroom deadlock body combines a keyed single cylinder classroom deadlock function with a latching mortise lock body. A 4874 would be specified where a separate deadbolt is wanted above a passage latch, not as a replacement for a classroom lock.
20) What mortise lock should I specify for a dormitory or corridor opening in student housing?
The Sargent 7925 is a Grade 1 heavy duty dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt, catalogued for corridor/dormitory use. The BEST 45H is also heavy duty and single cylinder keyed, but its function is classroom deadlock, which is intended for a door secured from the corridor side by key.
21) Can I use a Schlage PC10 cylindrical lock where a 45H mortise lock is specified?
No. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors - it installs in a bored cylindrical prep, not a mortise pocket. The BEST 45H is a mortise lock body requiring a mortise pocket. If the door is already prepped for mortise, the Schlage PM010 Grade 1 passage latch mortise lock is the mortise-prep counterpart.
22) Is a Dormakaba E-Plex or Saffire mortise lock a substitute for the BEST 45H classroom lock?
They are different classes of product. The Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton/card back-to-back mortise lock, the E-Plex 2066 is an electronic pushbutton keyless mortise lock for wide stile, and the Saffire LX-I-M002 is an electronic RFID mortise lockset with BLE mobile access at BHMA Grade 2. All are credential-operated locksets; the BEST 45H is a mechanical lock body with SFIC prep less core that takes a small format interchangeable core.
23) Is the BEST 45H durable enough for a high traffic school corridor?
It is built as heavy duty commercial hardware: 0.095 inch cold rolled steel case, cover and armored front, zinc dichromate plated against corrosion, with four case cover screws and an interlocking armored front and cover at the latch. The latch is one piece stainless, oil impregnated, with roughly 50 percent more contact surface at the strike, and the hub runs on roller bearings. The trim carries a lever return spring to fight lever droop, which is what usually fails first on abused classroom doors.
24) What is a good antimicrobial-finish alternative or comparison for healthcare corridors?
The BEST 45H mortise lock body is offered in 626AM satin chrome antimicrobial and 630AM satin stainless steel antimicrobial finishes with the UltraShield coating. Among comparable mortise hardware, the Marks USA 5PDN Grade 1 hospital passage push/pull paddleset is supplied in satin stainless steel and the TownSteel MRX-A-01 in satin stainless steel ligature resistant arch trim - both are passage function push or lever hardware rather than a keyed classroom body.
How fast can I get the BEST 45HCARD626 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 45HCARD626 come with a warranty?
Absolutely. The BEST 45HCARD626 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 45HCARD626?
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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