BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,198.00
$770.00
BEST BEST 45H Series (NX - Exit Function) - Rose Trim Heavy Duty Mortise Lock, Non-Keyed BES-45H-NX-RS

BEST 45H Series Heavy Duty Mortise Lock with Rose Trim - Non-Keyed Exit Function

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Model: 45H0NX3H626
$1,198.00
$770.00
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,198.00
$770.00
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BEST 45H Series Heavy Duty Mortise Lock with Rose Trim - Non-Keyed Exit Function

Professional Grade Mortise Lock Solution

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security and durability with advanced engineering features. This non-keyed exit function lock features a solid one-piece stainless steel anti-friction latch providing 50% more surface contact with strike, 2-3/4" backset, and precision roller bearing hub mechanism. Manufactured from 0.095" cold rolled steel with zinc dichromate plating for superior corrosion protection and meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards.

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: Case, cover, and armored front manufactured from 0.095" cold rolled steel with zinc dichromate plating for exceptional durability and corrosion protection.
  • Roller Bearing Operation: Roller bearing hub mechanism provides smooth, wear-resistant operation for long-term reliability in high-traffic commercial applications.
  • Reversible Configuration: Reversible latch rotates 180 degrees for easy handing change without opening case, with non-handed cylinder retainer for installation flexibility.
  • 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 strength.
  • Professional Trim Design: Self-aligning trim mechanism with lever return spring located in trim for enhanced protection against lever droop and positive horizontal return.
  • Grade 1 Certification: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength, Grade 2 Security standards for demanding commercial applications.

Technical Specifications

45H Series –The design and operation of the BEST® mortise lock meets the intent
of the standard for ANSI A117.1 section 404.2.6.
Builders Hardware Manufacturers Association:
45H Series –ANSI A156.13, Series 1000, Grade 1 Operation and Strength, Grade 2 Security. To meet Grade 1 Security, a drill resistant core
(1CD, 1CDP, 1CDF, or 1CDX) must be used with escutcheon trims, and 1EK7K4 high security cylinder must be used with sectional trims.
47H Series – ANSI A156.13, Series 1000, Grade 1 Operational, Strength, and Security

Auxiliary bolt – Stainless steel, non-handed.
Backset – 2-3/4"
Case –0.095” cold rolled steel, 5- 7/8" H x 7/8" D x 4-1/16" W. Steel is zinc dichromate plated for corrosion protection.
Deadbolt – Stainless steel, 1" throw.
Latchbolt –Solid stainless steel, 3/4" throw. Latch is oil-impregnated for anti-friction operation. Reversible without opening case.
Strike – For complete strike package spec’s see page 5.
Door Thickness – Standard lock configuration designed for doors 1-3/4" thick. Thick door configuration available for doors up to
5" thick (specify thickness when ordering).
Faceplate –Stainless steel, brass or bronze material, 8" H x 1-1/4" W x 1/16" T. Lock face automatically adjusts to proper bevel during
installation.
Products protected by one or more of the following patents: 4,873,853 5,590,555 5,794,472
Finishes –
• 605 - bright brass, clear coated
• 606 – satin brass, clear coated
• 611 – bright bronze, clear coated
• 612 – satin bronze, clear coated
• 613* – oxidized satin bronze, oil rubbed
• 618 – bright nickel plated, clear coated (brass base material)
• 619 – satin nickel plated, clear coated (brass base material)
• 622 – flat black coated (brass base material) 625 – brightchromium plated (brass base material)
• 626 – satin chromium plated (brass base material)
• 629 – bright stainless steel
• 630 – satin stainless steel
• 690* – dark bronze coated (brass base material)
*613 finish is designed to wear over time, providing an “antique” appearance.
*690 finish will continue as a dark brown appearance over time.
Antimicrobial Finish –
• 626AM – satin chrome plated with UltraShield™ antimicrobial protected coating
• 630AM – satin stainless steel with UltraShield™ antimicrobial protected coating
The BEST UltraShield finish inhibits the growth of bacteria and other microbes on the surface of the hardware.
NOTE: BEST UltraShieldTM option is recommended for use on any hardware application where product cleanliness is a high priority. i.e;.
Hospital/Healthcare, Elderly Care, Education, Transportation, Food-Service, Hospitality.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness (standard 1-3/4" or up to 5" thick door configuration), mortise pocket dimensions, and handing requirements.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper alignment of the 8" H x 1-1/4" W faceplate.
  3. Prepare door mortise pocket and drill required holes for the 2-3/4" backset configuration and cylinder preparation as specified in manufacturer instructions.
  4. Install case assembly into mortise pocket and secure with provided mounting hardware per manufacturer torque specifications, ensuring proper alignment with door bevel.
  5. Install trim components using self-aligning trim mechanism and adjust lever return spring mechanism for proper horizontal positioning and smooth operation.
  6. Test lock operation including latch and deadbolt function, verify 3/4" latch throw and 1" deadbolt throw, and make final adjustments as needed. Refer to manufacturer documentation for complete installation details and troubleshooting.

Professional Applications

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

Why Choose BEST Quality?

BEST 45H Series mortise locks deliver professional-grade reliability with 0.095" cold rolled steel construction and precision roller bearing mechanisms engineered for demanding commercial applications. The solid stainless steel anti-friction latch design provides 50% more surface contact for superior strength, while Grade 1 certification ensures dependable performance where security and durability are essential.

Product Specs

Series:
45H
Standard Cylinder:
SFIC Prep Less Core
Duty Level:
Heavy Duty
Keyed Function:
Non-Keyed
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise
Keyed:
No
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 45H0NX3H626 – Frequently Asked Questions

1) What does the NX exit function do on a BEST 45H mortise lock?
Exit function means non-keyed operation: there is no cylinder and no key control on this one. The 45H NX is set up so the door can be left free-egress from the inside without a keyed outside trim. If you need key control on the outside, you want a keyed 45H function instead, not the NX.
2) Do I need to order the BEST 45H handed?
No. The latch is reversible and rotates 180 degrees, so handing is changed in the field without opening the case. The auxiliary bolt is non-handed and so is the cylinder retainer. That makes it a practical stock item for a property manager keeping spares for a building with mixed swings.
3) What backset does the BEST 45H mortise lock use, and will it work in my existing mortise prep?
2-3/4 inch backset, which is the standard commercial mortise backset. If the door was previously prepped for another Series 1000 mortise lock at 2-3/4 inches, the pocket and cross bore locations line up. Doors prepped at 2-3/8 inches, typical of cylindrical locks, are not a match.
4) Is the BEST 45H Grade 1 certified for a school or hospital corridor?
The 45H meets ANSI A156.13, Series 1000, Grade 1 Operation and Strength, with Grade 2 Security. It also meets the intent of ANSI A117.1 section 404.2.6. To reach Grade 1 Security you need a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trims, or the 1EK7K4 high security cylinder with sectional trims. On this non-keyed exit function there is no core, so the security grade is a moot point; the operational and strength rating is what applies.
5) What do I have to specify when ordering a BEST 45H with rose trim?
Three choices plus thickness. Trim style is H (2-3/4 inch flat rose), R (2-3/4 inch concave rose) or S (3-1/2 inch flat rose). Lever style covers 12 solid tube without return, 3 solid tube with return, 4 round knob, contour with angle return, curved with return, curved without return, and gull wing. Finish runs from 605 bright brass through 690 statuary dark bronze, including 626AM and 630AM antimicrobial. And if the door is over 1-3/4 inches, call out the thickness.
6) What is the closest equivalent to a BEST 45H exit function mortise lock from another manufacturer?
The Sargent 7925 is the nearest match in intent: it is a Grade 1 heavy duty mortise lock in the 7900 Series with rose trim and a corridor/dormitory exit function. The difference is the cylinder - the Sargent 7925 includes a single cylinder deadbolt, while the BEST 45H NX exit function is non-keyed and ships with SFIC prep less core. If the opening needs key control on the outside, the 7925 covers it; if egress-only operation with no key is what the drawing calls for, the 45H NX matches directly.
7) I just need a non-keyed mortise latch with no deadbolt - is there a simpler option than the BEST 45H?
Yes. The Schlage PM010 is a Grade 1 non-keyed 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. Both give free operation from either side with no locking at all. The BEST 45H NX exit function differs in that it is a full 45H mortise case with a 1 inch throw stainless deadbolt alongside the 3/4 inch latchbolt - choose it when the opening needs a bolt that is thrown and retracted from the inside only.
8) What should I use instead of a BEST 45H if the door is a restroom or bedroom that needs privacy?
An exit function lock is not a privacy set. For bed/bath and restroom openings, the Hager 3840S is a Grade 1 privacy mortise lock with a 2-3/4 inch backset for doors 1-3/4 to 2 inches thick, and the Cal-Royal NM8440 is a Grade 1 privacy mortise lockset with deadbolt for 1-3/4 inch doors. Both are built for the inside-locking, outside-emergency-release pattern that privacy openings require, while the BEST 45H NX is configured as a non-keyed exit function.
9) We need key control on the outside lever - what keyed mortise locks compare to the BEST 45H?
The BEST 45H NX exit function is non-keyed, so for outside key operation look at the Cal-Royal NM8080, a Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option, the Accentra 8805FL Grade 1 storeroom mortise lock in the 8800 Series, or the Corbin Russwin ML2003 Grade 1 classroom mortise lockset in the ML2000 Series. Storeroom keeps the outside lever locked at all times and retracts the latch by key; classroom lets a key lock and unlock the outside lever.
10) Is the Schlage L0170 a substitute for a BEST 45H non-keyed mortise lock?
No. The Schlage L0170 is a Grade 1 heavy duty half dummy trim with a dummy function - it is a fixed lever with no latch and no lock mechanism, used on an inactive leaf. The BEST 45H NX is a working mortise lock case with a 3/4 inch throw latchbolt and 1 inch throw deadbolt. The Emtek 3019 Brisbane, 3102 Memphis, 3104 Hamilton, and 3106 Manhattan mortise entrance locksets are likewise dummy function. Non-keyed does not mean non-operating.
11) What are the 626AM and 630AM antimicrobial finishes on the BEST 45H, and where should I use them?
626AM is satin chrome and 630AM is satin stainless, both with the BEST UltraShield antimicrobial protected coating, which inhibits growth of bacteria and other microbes on the hardware surface. BEST recommends it where cleanliness is a priority: hospital and healthcare, elderly care, education, transportation, food service and hospitality. On a standard office corridor, plain 626 or 630 is the same lock without the coating.
12) Will the 613 oil-rubbed bronze finish on a BEST 45H match the locks already on my other doors?
Likely not exactly, and by design. The 613 oxidized satin bronze oil-rubbed finish is made to wear over time into an antique appearance, so new hardware will not match doors that have been in service for years. The 690 dark bronze coated finish behaves differently, continuing as a dark brown appearance over time. For a consistent building-wide look on a plated finish, 626 satin chrome or 630 satin stainless are the stable choices.
13) Is the BEST 45H exit function lock the same thing as a passage lock?
Not quite. A passage latch has no deadbolt and no security side at all. The 45H exit function carries both a latchbolt and a deadbolt in the case while remaining non-keyed. If what you actually want is a plain passage mortise latch, look at the Schlage PM010 Grade 1 passage mortise lock or the Falcon MA101 Grade 1 heavy duty mortise passage lock, both non-keyed passage functions. The Hager 3810S is a Grade 1 passage mortise lock with rose trim at the same 2-3/4 inch backset.
14) Does the BEST 45H come with a core, and what cylinder prep does it have?
Standard cylinder prep is SFIC less core, meaning the lock is prepped for a BEST small format interchangeable core but the core is not supplied. On the non-keyed exit function there is no key control on the lock anyway, so no core is required to put it in service.
15) Is the BEST 45H mortise lock electronic or does it take an access control credential?
It is entirely mechanical, no electronics and no wiring. If the opening needs credential control, the comparable electronic mortise options include the Schlage CO-100 standalone keypad mortise lock, the Alarm Lock DL3500CR Grade 1 Trilogy with 300 user codes, and the Dormakaba E-Plex 5086 pushbutton and card mortise lock. For an electrified version of a mechanical mortise, the Command Access ML190 Series is a motorized mortise lock with field selectable EL/EU operation on 24VDC.
16) For a behavioral health or psychiatric unit, is the BEST 45H the right mortise lock?
For ligature-resistant openings, look at the TownSteel MRX-L-01, a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function, or the MRX-A-01, a Grade 1 heavy duty satin stainless ligature resistant arch trim mortise lockset, also passage. The Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant. The BEST 45H uses conventional rose trim with lever and knob designs and offers 626AM satin chrome and 630AM satin stainless UltraShield antimicrobial finishes, which suits general healthcare corridors rather than ligature-risk rooms.
17) Can I use a Sargent 4874 deadbolt or a Sargent 130KB thumbturn in place of a BEST 45H?
Neither replaces the lock. The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset in the 4870 Series - it throws a bolt but has no latch and no lever trim, so the door will not latch on closing. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series, a trim piece only, as is the Sargent 130W with a round backplate in the 7800 Series. The BEST 45H NX combines latchbolt, deadbolt, and lever or knob trim in one 2-3/4 inch backset assembly.
18) If the door is thicker than 1-3/4 inches, does the BEST 45H still work or should I choose something else?
The BEST 45H standard configuration is designed for 1-3/4 inch doors, with a thick door configuration available up to 5 inches when the thickness is specified at order. Among comparable mortise locks, the Hager 3810S rose-trim Grade 1 passage lock and 3810E escutcheon version cover 1-3/4 to 2-1/2 inch doors, while the Cal-Royal NM8050 office/entrance and NM8070 classroom locksets are built for 1-3/4 inch doors only. For doors beyond 2-1/2 inches, the 45H thick door build is the one to specify.
19) We want access control on this opening - what electronic mortise locks compare to the BEST 45H?
The BEST 45H is a mechanical, non-electronic mortise lock. For credential-based control on a mortise prep, the Schlage CO-100-MS is a Grade 1 heavy duty standalone electronic mortise lock with keypad reader for 1-3/4 inch doors, the TownSteel FME-2000 is a Grade 1 heavy duty classroom mortise lockset with RFID for 1-3/4 inch doors, and the Dormakaba E-Plex E5086 is a Grade 1 electronic pushbutton and card back-to-back mortise lock. The Schlage LEMD-GRW is a Grade 1 ENGAGE Series wireless mortise lock with a 125kHz proximity reader and a 3 hour fire rating.
20) How durable is the BEST 45H case for a high traffic entrance?
Case, cover and armored front are 0.095 inch cold rolled steel with zinc dichromate plating for corrosion protection. The hub runs on roller bearings, the armored front wraps both latch and deadbolt for lateral strength, and there are four case cover screws, one at each corner, with the armored front and cover interlocking at the latch. The lever return spring sits in the trim rather than the case, which is what keeps levers from drooping on a heavily used door.
21) Which rose size should I pick on a BEST 45H if I am covering up old trim marks?
The S trim is a 3-1/2 inch flat rose, larger than the H (2-3/4 inch flat) and R (2-3/4 inch concave). If the door has wear rings or filled holes from previous cylindrical or mortise trim, the 3-1/2 inch rose gives you the most coverage. For a clean new door, the 2-3/4 inch roses keep the profile smaller.
How fast can I get the BEST 45H0NX3H626 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 45H0NX3H626 come with a warranty?
Absolutely. The BEST 45H0NX3H626 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 45H0NX3H626?
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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