BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,391.00
$862.22
BEST BEST 45H Series (D - Storeroom Function) - Escutcheon Trim Heavy Duty Mortise Lock, Single Keyed BES-45H-D-ES

BEST 45H Series Heavy Duty Mortise Lock with Escutcheon Trim - Storeroom Function Single Cylinder

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Model: 45H7D3J626
$1,391.00
$862.22
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,391.00
$862.22
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BEST 45H Series Heavy Duty Mortise Lock with Escutcheon Trim - Storeroom Function Single Cylinder

Professional Grade Mortise Lock with Enhanced Security Features

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with storeroom function operation and single cylinder keying. Featuring 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 for maximum durability. This Grade 1 operational and strength rated lock meets ANSI A156.13 Series 1000 standards and includes escutcheon trim for professional installations.

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 reversible operation.
  • Heavy-Duty Construction: 0.095" cold rolled steel case, cover, and armored front manufactured for exceptional strength and durability in demanding applications.
  • Standard Backset: 2-3/4" backset configuration designed for doors 1-3/4" thick with thick door options available up to 5" thick.
  • Grade 1 Performance: ANSI A156.13 Series 1000 Grade 1 Operation and Strength rated with Grade 2 Security for professional commercial applications.
  • Roller Bearing Operation: Roller bearing hub mechanism provides smooth, wear-resistant operation with enhanced cycle life and reduced maintenance.
  • Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with self-aligning installation design.
  • Visual Lock Indication: Locking toggle includes clear indication of locked and unlocked states with optional padlock icon indicators available.
  • Anti-Microbial Options: Available with UltraShield antimicrobial protected coating in 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, mortise pocket dimensions, and cylinder preparation for this mortise lock configuration.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper lock body and strike installation.
  3. Prepare door by cutting mortise pocket to specified dimensions and drilling required holes for cylinder, trim mounting, and through-bolts per manufacturer instructions.
  4. Install lock body in mortise pocket and secure with provided screws. Install strike box and strike plate in frame mortise with proper alignment to lock body.
  5. Mount escutcheon trim and install cylinder with proper core configuration. Adjust operational components for proper alignment, latching, and smooth lever operation.
  6. Test lock operation including key function, lever operation, latch engagement, and deadbolt throw to verify proper function. 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

Anti-Microbial Option

Available with UltraShield antimicrobial protected coating in satin chrome (626AM) and satin stainless steel (630AM) finishes. The BEST UltraShield finish inhibits the growth of bacteria and other microbes on the surface of the hardware, 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 rated for heavy-duty commercial applications. Grade 1 operational and strength certification ensures dependable performance in demanding environments. Engineered with roller bearing mechanisms and anti-friction components for long-term durability where consistent security 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
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 45H7D3J626 – Frequently Asked Questions

1) Will the BEST 45H mortise lock fit a 1-3/4 inch door, and what if my doors are thicker?
The standard 45H configuration is built for 1-3/4 inch doors, which is the usual commercial thickness. For anything thicker, BEST builds a thick-door configuration good up to 5 inches, but you have to state the actual door thickness on the order. It isn't a field adjustment, so measure the leaf before you buy.
2) What does the D storeroom function on a BEST 45H mortise lock actually do?
Storeroom means the outside lever is always locked. Key retracts the latch for entry, and the inside lever always retracts it for free egress, so the door never gets left unsecured by accident. That is why it lands on mechanical rooms, IT closets, stock rooms and roof access. If you need the outside lever to be lockable and unlockable by key and stay that way, storeroom is the wrong function.
3) Does the BEST 45H come with a core, or do I have to order the cylinder separately?
It ships prepped for a small format interchangeable core, less core. The core is a separate line item, which is what lets a locksmith key it into an existing BEST SFIC system on site instead of waiting on factory keying. Budget for one core per lock.
4) Is the BEST 45H Grade 1, and does it meet Grade 1 security?
ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, but Grade 2 for Security as normally supplied. To reach Grade 1 Security with escutcheon trim you have to specify a drill resistant core, 1CD, 1CDP, 1CDF or 1CDX. If the spec on your drawing calls out Grade 1 security outright, order the drill resistant core with it or step up to the 47H, which carries Grade 1 for operational, strength and security.
5) Will a BEST 45H latch into the strike prep already in my frame?
The 45H uses a 2-3/4 inch backset with a 3/4 inch stainless latchbolt throw and a 1 inch deadbolt throw, so it needs an ANSI mortise strike prep sized for both bolts. If your existing opening was cut for a standard mortise lock at 2-3/4 backset you are usually replacing like for like. Openings prepped at a 2-3/8 backset, the common residential figure, will not take it without recutting the pocket.
6) I need a classroom or privacy lock, not storeroom. What should I order instead of the 45H D?
Storeroom is the wrong function for a classroom or a restroom. For classroom, the Cal-Royal NM8070 is a Grade 1 heavy duty classroom mortise lockset for 1-3/4 inch doors, and the Corbin Russwin ML2003 is a Grade 1 classroom mortise in the ML2000 Series. For privacy on a bed or bath, the Cal-Royal NM8440 is Grade 1 privacy with a deadbolt, and the Hager 3840S is a Grade 1 privacy mortise at the same 2-3/4 inch backset. For an office or entrance door, the Cal-Royal NM8050 covers office/entrance with an auxiliary deadlatch.
7) What mortise lock should I use instead of the 45H storeroom on a door that needs access control release from a card reader?
For an electrically controlled opening, the Command Access ML190 is a heavy-duty motorized mortise lock with storeroom function and field selectable EL or 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 on 12/24VDC for 1-3/4 inch doors. Both keep the mechanical mortise case in the door and add electrical control of the outside lever; the ML190 matches the storeroom function of the BEST 45H, which controls the outside lever by key alone.
8) What is the closest Grade 1 storeroom mortise lock to the BEST 45H if BEST keying is not required?
The Accentra 8805FL from the 8800 Series is a Grade 1 storeroom mortise lock, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset offered with an interchangeable core option. All three are storeroom function, so the key retracts the latch and the outside lever stays locked at all times. The BEST 45H ships with SFIC prep less core, so it expects a small format interchangeable core to be supplied and keyed into an existing system; the NM8080's interchangeable core option is the closer path if that SFIC system already exists in the building, while the 8805FL comes as a storeroom lock with the Arcadia lever.
9) The door needs a classroom lock, not a storeroom lock. What mortise lock takes its place?
The BEST 45H covered here is storeroom function, which means it is always locked from the outside and never held unlocked by key. For a classroom opening the Cal-Royal NM8070 is a Grade 1 classroom mortise lockset with auxiliary deadlatch, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series, and the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset. The NM8070, ML2003 and LA318GJ are all specified for 1-3/4 inch doors, matching the standard door thickness the 45H is built around.
10) Can an electronic mortise lock replace a BEST 45H storeroom lock on the same door?
Several Grade 1 electronic mortise locks cover the same opening with credentials instead of a key: the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors, the Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating, and the Accentra NTM623-NR is a Grade 1 nexTouch Generation 3 mortise lock with a capacitive touchscreen keypad and cylinder override. The 45H is a non-electronic mechanical lock, so it needs no power, wiring or door cord at the opening, while the NTM623-NR retains a cylinder override for key access alongside the keypad.
11) Which mortise lock replaces a 45H storeroom on a residential-style entry or apartment door with a 2-1/2 inch backset?
The BEST 45H is built on a 2-3/4 inch backset, so a door prepped for a 2-1/2 inch backset needs a different case. The Baldwin 6310 is an entry/storeroom knob by knob mortise lock body with a 2-1/2 inch backset for doors 1-3/8 inch and over, and the 6310190RRLS is the right hand reverse lever by lever version of that same entry/storeroom body. For entrance/apartment function on the same 2-1/2 inch backset, the Baldwin 6301 comes knob by knob and the 6301LS lever by lever, both for doors 1-3/4 inch and over.
12) The office door needs the lever unlocked during business hours. What mortise lock does that instead of a storeroom function?
Storeroom function on the BEST 45H keeps the outside lever locked at all times, so it will not hold open for business hours. The Cal-Royal NM8050 is a Grade 1 heavy duty 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, non-keyed, for doors 1-3/4 inch to 2-1/2 inch. The 3850E shares the 2-3/4 inch backset and escutcheon trim style of the 45H.
13) We need a keypad mortise lock on a door thinner than 1-3/4 inch. What works there?
The BEST 45H standard configuration is built for 1-3/4 inch doors, with thick door configurations up to 5 inches. For a thinner door with pushbutton access, the Alarm Lock DL2700CR Trilogy T2 is a Grade 1 classroom function electronic mortise lock with a weatherproof design fitting doors 1-5/8 inch to 1-7/8 inch, and the DL3500CR is a Grade 1 classroom electronic mortise lock with 300 user codes over the same 1-5/8 inch to 1-7/8 inch range. For a keypad deadbolt rather than a latchset, the DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and privacy keypad across that same thickness range.
14) Do I have to specify handing when I order a BEST 45H mortise lock?
The latchbolt is reversible without opening the case, and the auxiliary bolt is non-handed. That means one lock covers either hand and a locksmith can flip it on the door rather than sending it back. Handy when you are stocking spares for a building with doors swinging both ways.
15) What is the difference between the J, M and N escutcheon trims on the BEST 45H?
Three escutcheon choices: J is wrought, M is forged, and N is forged with a concealed cylinder. N is the one to pick when you want the core hidden from the corridor side for appearance or to discourage attack on the cylinder face. Lever choice is separate from trim, with seven styles including 12 solid tube no return, 3 solid tube with return, 4 round knob, contour with angle return, curved with and without return, and gull wing.
16) Which BEST 45H finish should I use in a hospital or a school?
For healthcare, elderly care, education, food service, transportation and hospitality, BEST offers UltraShield antimicrobial coated finishes: 626AM satin chrome and 630AM satin stainless. The coating inhibits growth of bacteria and other microbes on the hardware surface. Otherwise there are twelve standard finishes from 605 bright brass through 630 satin stainless and 690 dark bronze. Note 613 oxidized satin bronze is meant to wear to an antique look over time, so it is a poor choice if you need every door to keep matching.
17) Should I use a mortise lock like the BEST 45H or a cylindrical lockset?
A mortise lock buys you a latchbolt and a separate 1 inch deadbolt in one case, an armored front wrapping both bolts, and a roller bearing hub that survives high-traffic use. The cost is preparation: you cut a pocket into the door edge rather than boring two holes. If the door is already mortise prepped, stay mortise. If it is bored for a cylindrical lock and you do not want to recut, a cylindrical Grade 1 unit like the Schlage PC Series is the simpler retrofit, though the non-keyed PC10 is passage only.
18) What are the alternatives to the BEST 45H storeroom mortise lock from other brands?
Two direct storeroom-function equivalents we carry: the Cal-Royal NM8080 heavy duty Grade 1 storeroom mortise lockset, which offers an interchangeable core option and is listed for 1-3/4 inch doors, and the Accentra 8805FL Grade 1 storeroom mortise lock in the 8800 Series with an Arcadia lever. The main reason to stay with the 45H is keying: if the building is already on BEST SFIC, the 45H drops into that system without adding a second key system.
19) Does the BEST 45H meet accessibility requirements for lever operation?
BEST states the design and operation of the mortise lock meets the intent of ANSI A117.1 section 404.2.6, the door hardware operation clause. Pair that with one of the lever styles rather than the 4 round knob option, since a knob is not an accessible operating device.
20) Is there a cheaper non-keyed mortise lock for a door that does not need to lock?
For an opening that only needs the latch and no key, the Falcon MA101 is a Grade 1 heavy-duty mortise passage lock with field reversible operation and a fire rating, and the Schlage PM010 is a Grade 1 passage latch mortise lock, non-keyed, for 1-3/4 inch doors. The Hager 3810E is a Grade 1 passage mortise lock with escutcheon and a 2-3/4 inch backset, which matches both the 2-3/4 inch backset and the escutcheon trim of the BEST 45H, so the door prep and trim footprint stay in the same family. The 45H itself is a keyed single cylinder lock, so it carries cylinder prep those passage functions do not need.
21) What is the difference between the BEST 45H storeroom and a mortise deadbolt like the Sargent 4874?
They do different jobs. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset, and the Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing. A deadbolt alone has no latch and no lever, so the door does not latch closed on its own. The BEST 45H is a complete storeroom lockset with a 3/4 inch throw solid stainless latchbolt plus a 1 inch throw deadbolt in one case, operated by lever trim. If the opening already has lever hardware and only needs added bolt security, the 4874 shares the 2-3/4 inch backset the 45H uses.
22) Will an Emtek mortise entrance lockset work as a substitute for a BEST 45H commercial storeroom lock?
No. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton and 3106 Manhattan mortise entrance locksets are all dummy function, meaning the trim is fixed and there is no working latch or key. The same is true of the Schlage L0170 half dummy trim and the Falcon MESC600DT dummy escutcheon lever trim. Dummy trim is for an inactive leaf or a pull-only door. The BEST 45H is a keyed single cylinder storeroom lock with a working latchbolt and deadbolt, specified for commercial use.
23) What mortise lock goes on a behavioral health or ligature resistant opening instead of a standard lever lock?
Lever trim, including the curved and gull wing levers offered on the BEST 45H, presents a ligature point. For those rooms the TownSteel MRX-A-01 is a Grade 1 heavy duty ligature resistant arch trim mortise lockset in satin stainless steel, passage function for 1-3/4 inch doors, and the MRX-L-01 is the Grade 1 heavy duty anti-ligature lever version, also passage function in stainless steel. 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 they do not lock, unlike the keyed storeroom 45H.
24) Which mortise lock replaces the 45H on a restroom or bedroom door that needs privacy?
Storeroom function on the BEST 45H is keyed from the outside and cannot be locked from inside the room. For privacy the Cal-Royal NM8440 is a 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 3840S matches the 2-3/4 inch backset of the 45H, so the mortise pocket location in the door stays the same.
25) What mortise lock handles a dormitory or corridor door where the inside lever needs to release the deadbolt?
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, for corridor and dormitory openings. Exit function means turning the inside lever retracts both the latch and the deadbolt in one motion. The BEST 45H is a single cylinder storeroom lock and carries escutcheon trim rather than the rose trim on the 7925.
26) For a hotel or multi-family opening, what mortise lock takes credentials instead of the 45H key?
The Dormakaba Saffire LX-I-M002 is an electronic RFID mortise lockset with BLE mobile access rated BHMA Grade 2, and the Schlage LE Series LEBMB-ADD is a Grade 2 mobile-enabled mortise lock with push button and LED covering privacy, office and apartment functions for 1-3/4 inch doors with a 3 hour fire rating. The Dormakaba PowerPlex P2066 is a mortise lock in the PowerPlex 2000 Series. The BEST 45H differs in that it is mechanical and non-electronic, keyed single cylinder, with a Grade 1 operation and strength rating.
27) Which mortise lock should I use in place of the 45H on an ornamental iron door about 1 inch thick?
The BEST 45H standard configuration is designed for 1-3/4 inch doors. For a 1 inch thick ornamental iron door, the Marks USA 21AC is an entrance double cylinder Unilock ornamental iron mortise lock with round knob for 1 inch doors, and the 22AC Series is an entrance double cylinder ornamental iron mortise lock with round knob, also for 1 inch doors. Both are double cylinder, keyed on both sides, where the 45H is single cylinder.
28) What mortise lock covers a door that needs both keypad and card credentials on both sides?
The Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card lock in a back to back mortise configuration from the E-Plex 5X86 Series, so both sides carry a reader. The BEST 45H is a mechanical single cylinder storeroom lock keyed on the outside only, with no electronic credential.
29) How do I know at a glance whether a BEST 45H is locked?
The locking toggle carries clear indication of the locked and unlocked state, and padlock icon indicators are available as an option. That is useful for maintenance walking a building, but it is a toggle indicator on the lock, not a corridor-side classroom security indicator. If you need staff to read lock status from outside the room, the Marks USA LA318GJ is a Grade 1 classroom security indicator mortise lockset with a steel escutcheon measuring 8-1/2 x 2-3/4 x 7/16 inches for 1-3/4 inch doors.
30) Is the BEST 45H mortise lock heavy duty enough for a high traffic commercial entrance?
Case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion protection, and the hub runs on roller bearings for wear resistance. The latch is solid one-piece stainless with 50 percent more surface contact against the strike, and it is oil impregnated for anti-friction operation. It is rated heavy duty commercial, which is what you want on a door cycling all day.
31) Is the Codelocks CL2255 a substitute for a heavy duty commercial mortise lock?
The Codelocks CL2255 is an electronic tubular mortise latch in the CL2000 Series with a brushed steel finish, and it is rated medium duty. The BEST 45H is heavy duty for commercial use, with a 0.095 inch cold rolled steel case, cover and armored front, and a Grade 1 operation and strength rating under ANSI A156.13 Series 1000. The two sit at different duty levels, so the CL2255 suits lighter traffic openings.
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Can I return it if it doesn’t work for me?
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Does the BEST 45H7D3J626 come with a warranty?
Absolutely. The BEST 45H7D3J626 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 45H7D3J626?
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