BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,480.00
$886.87
BEST BEST 45H Series (CHB - Holdback Function) - Rose Trim Heavy Duty Mortise Lock, Double Keyed BES-45H-CHB-RS

BEST 45H Series Heavy Duty Mortise Lock with CHB Holdback Function and Rose Trim

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Model: 45H7CHB15H626
$1,480.00
$886.87
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,480.00
$886.87
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BEST 45H Series Heavy Duty Mortise Lock with CHB Holdback Function and Rose Trim

Professional Grade Mortise Lock with Advanced Security Features

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with CHB holdback function and rose trim configuration. Engineered with a solid one-piece stainless steel anti-friction latch providing 50% more surface contact with strike, this double keyed mortise lock features a 2-3/4" backset and meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards. The 0.095" cold rolled steel case construction ensures exceptional durability for demanding commercial applications.

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 manufactured for exceptional strength and durability in commercial applications.
  • Standard Backset Configuration: 2-3/4" backset design accommodates standard door preparations for versatile installation options.
  • Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with staked assembly design for self-alignment during installation.
  • Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation with four position hub toggle design for easy handing changes without opening case.
  • Enhanced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch for superior structural strength.
  • Visual Lock Indication: Locking toggle includes clear indication of "locked" and "unlocked" states with optional padlock icon indicators.
  • ANSI Grade 1 Compliance: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards for commercial security 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), stile width, and handing as applicable to this mortise lock.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper backset alignment.
  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, ensuring proper alignment of armored front.
  5. Adjust operational components including hub toggle positions for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function of latch, deadbolt, and holdback features, making 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 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 compliance ensures dependable performance where security and durability are essential. Advanced features like roller bearing hub mechanisms and self-aligning trim provide smooth operation and simplified installation for professional locksmiths and contractors.

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
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 45H7CHB15H626 – Frequently Asked Questions

1) What does the CHB holdback function do on a BEST 45H mortise lock?
CHB is the holdback function on the 45H, and the lock is double keyed, meaning it takes a cylinder on both sides. Holdback lets the latchbolt be held retracted so the door swings free during periods you want the opening open, then released back to latching. It is a common choice on corridor and service doors that stay open during business hours and get secured after. The deadbolt throws 1 inch and the latchbolt 3/4 inch when the opening is locked down.
2) Does the 45H mortise lock come with a cylinder or core?
No core is included. The 45H ships with SFIC prep, less core, so you supply BEST small format interchangeable cores to key it into your existing system. Because the CHB version is double keyed, you need two cores, one for each side, not one.
3) Do I have to order the BEST 45H handed, or can it be changed in the field?
Handing is field adjustable. The 45H uses a four position hub toggle that lets you change handing without opening the case, and the latchbolt is reversible without opening the case as well. The auxiliary bolt is non-handed stainless. For a property manager stocking spares across a building, that means one lock covers left and right hand openings.
4) Is the BEST 45H mortise lock ANSI Grade 1, and does it meet Grade 1 security?
The 45H meets ANSI A156.13, Series 1000, Grade 1 for Operation and Strength, but Grade 2 for Security as standard. To reach Grade 1 Security you have to add a drill resistant core (1CD, 1CDP, 1CDF or 1CDX) with escutcheon trim, or a 1EK7K4 high security cylinder with sectional trim. If your spec calls out Grade 1 security out of the box, the 47H Series is the one that carries Grade 1 for Operational, Strength and Security.
5) What is the closest Grade 1 mortise lock to the BEST 45H if the opening needs a keyed storeroom function instead of holdback?
The BEST 45H CHB is a double-cylinder holdback mortise lock on a 2-3/4 inch backset. If the opening calls for a storeroom function instead, 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 Grade 1 storeroom mortise lockset for 1-3/4 inch doors with an interchangeable core option. Storeroom keeps the outside lever locked at all times with key retraction, where the 45H CHB holdback lets the latch be held retracted.
6) If the door is a classroom rather than a holdback opening, what mortise lock should be specified instead of the BEST 45H CHB?
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 Grade 1 classroom mortise lockset with an auxiliary deadlatch, also for 1-3/4 inch doors. Both are keyed classroom function; the BEST 45H CHB is a double-cylinder holdback lock, which is a different operation entirely.
7) What mortise lock should I use if the opening does not need to be keyed at all?
The BEST 45H CHB is a keyed double-cylinder lock, so for a non-keyed opening look at a passage or privacy body instead. 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 Schlage PM010 is a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors, and the Hager 3840S is a Grade 1 privacy mortise lock on a 2-3/4 inch backset for 1-3/4 to 2 inch doors.
8) Will a Baldwin 6301 mortise lock body drop into the same door prep as a BEST 45H?
No. The Baldwin 6301 entry/apartment mortise lock body is a 2-1/2 inch backset, while the BEST 45H is a 2-3/4 inch backset. The cross-bore and cylinder centerlines will not line up, so it is not a drop-in swap. If you need to hold a 2-3/4 inch backset, the Hager 3850E office mortise lock and the Sargent 4874 deadbolt are both 2-3/4 inch backset parts.
9) If the opening has to be electrically locked or unlocked from an access control panel, what mortise lock replaces the BEST 45H?
The BEST 45H is a mechanical lock with no electrical option. For access control, the Command Access ML190 is a heavy duty motorized mortise lock with field selectable EL/EU 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, on 12/24VDC for 1-3/4 inch doors.
10) Which BEST 45H finish should I use for a hospital or school?
For healthcare, elderly care, education, transportation, food service and hospitality, BEST offers two UltraShield antimicrobial finishes: 626AM satin chrome and 630AM satin stainless steel. The coating inhibits growth of bacteria and other microbes on the hardware surface. If cleanliness is not a driver, plain 626 or 630 are the usual commercial choices. Note that 613 oil rubbed bronze is meant to wear to an antique look over time, so it is a poor pick where you need a consistent appearance across a run of doors.
11) What is the difference between a mortise lock like the 45H and a cylindrical lockset?
A mortise lock drops into a pocket routed into the edge of the door and carries both a latchbolt and a separate 1 inch deadbolt in one case, with the whole works protected by a 0.095 inch steel case and armored front. A cylindrical lock, such as the Schlage PC10 Grade 1 passage lock with rose, installs through a simple bored hole and is faster to fit but does not give you a deadbolt in the same body. Mortise is the choice on high traffic commercial openings where you want deadbolt security and long cycle life; cylindrical is the choice when the door is already bored and the function is simple.
12) If I do not need a double keyed holdback lock, what other Grade 1 mortise functions are there?
Function is the first decision on a mortise lock, and double keyed holdback is a specific one. If you need a classroom function, the Corbin Russwin ML2003 and the Cal-Royal NM8070 are both Grade 1 classroom mortise locksets for 1-3/4 inch doors. Storeroom is covered by the Accentra 8805FL and the Cal-Royal NM8080. For privacy on a bed or bath door, the Cal-Royal NM8440 is Grade 1 with a deadbolt. Passage, where no key is involved at all, is the Falcon MA101 or the Schlage PM010.
13) Can the BEST 45H be tied into an access control system?
No. The 45H is a mechanical lock with no electronic components, so it cannot be wired to a card reader or access control panel. For an electrified mortise opening, the Schlage L9092EU with 03A trim runs on 12/24VDC with request to exit and a keyed outside lever, and the Command Access ML190 Series is a motorized mortise lock with field selectable fail safe or fail secure operation on 24VDC. For standalone keypad or credential access, look at the TownSteel FME-2000 Grade 1 RFID mortise lockset or the Dormakaba E-Plex 2066 pushbutton keyless mortise lock.
14) Does the BEST 45H meet accessibility requirements for lever operation?
BEST states that the design and operation of the 45H mortise lock meets the intent of ANSI A117.1 section 404.2.6. If your opening needs a lever rather than a knob for that reason, the 45H offers several lever styles including curved with and without return, contour with angle return, gull wing, and the 3 and 12 solid tube levers. The 4 option is a round knob and would not serve an accessible opening.
15) What is another heavy duty Grade 1 mortise lock with rose trim besides the BEST 45H?
The Sargent 7925 is a Grade 1 heavy duty mortise lock in the 7900 Series with rose trim and a single-cylinder deadbolt, set up for corridor/dormitory exit function. The BEST 45H is also a heavy duty commercial mortise lock and its rose trim comes in 2-3/4 inch flat, 2-3/4 inch concave, and 3-1/2 inch flat roses, with the CHB variant keyed as a double cylinder.
16) How does the BEST 45H compare to an electronic mortise lock like the TownSteel FME-2000 or Schlage CO-100?
The BEST 45H is a mechanical, non-electronic mortise lock prepped for an SFIC core, so it needs no power, no batteries, and no credential management. The TownSteel FME-2000 is a Grade 1 heavy duty mortise lockset with RFID technology in a classroom function for 1-3/4 inch doors, and 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. Choose the electronic bodies when you need credentials or audit; choose the 45H when the opening is keyed only.
17) For a behavioral health or anti-ligature opening, what mortise lockset works instead of the BEST 45H?
The BEST 45H uses conventional lever and knob trim, which is not an anti-ligature profile. For those openings, the TownSteel MRX-L-01 is a Grade 1 heavy duty stainless steel anti-ligature lever mortise lockset in passage function for 1-3/4 inch doors, the MRX-A-01 is the same passage function with satin stainless ligature resistant arch trim, and the Marks USA 5PDN is a Grade 1 hospital passage mortise push/pull paddleset that is ligature resistant and ADA compliant in satin stainless steel.
18) Can a Marks USA 21AC or 22AC ornamental mortise lock replace a BEST 45H on a commercial door?
Generally no. The Marks USA 21AC and 22AC are entrance double cylinder ornamental iron mortise locks with a round knob, listed for 1 inch door thickness. The BEST 45H is a heavy duty commercial mortise lock whose standard configuration is built for 1-3/4 inch doors, with a thick door configuration available up to 5 inch. The ornamental iron bodies are intended for thin gate and iron door stiles, not standard commercial door leaves.
19) What do I order if I only need dummy trim to match a working BEST 45H on a paired opening?
A dummy leaf does not need a lock body. The Schlage L0170 is a Grade 1 heavy duty mortise half dummy trim in the L Series for 1-3/4 inch doors, and Emtek offers dummy mortise entrance locksets in the Brisbane 3019, Memphis 3102, Hamilton 3104, and Manhattan 3106 designs. The BEST 45H itself is a keyed double-cylinder working lock, so it is the wrong part for an inactive leaf.
20) Is the BEST 45H rose trim durable enough for a high traffic entry?
It is built for that. Heavy duty commercial rating, 0.095 inch cold rolled steel case, cover and armored front, zinc dichromate plated for corrosion resistance, four case cover screws at each corner, and an interlocking armored front and cover at the latch. The hub rides on roller bearings for wear resistant operation and the anti-friction latch is oil impregnated with a curve engineered for cycle life. It is specified for office buildings, schools, hospitals, retail, industrial, multi-tenant residential and government work.
21) Is the Codelocks CL2255 a lighter-duty alternative to the BEST 45H?
The Codelocks CL2255 is an electronic tubular mortise latch in the CL2000 Series, rated medium duty, in a brushed steel finish. The BEST 45H is a heavy duty commercial mortise lock and is not electronic. The CL2255 suits lower-traffic keyless openings; for a high-cycle commercial door with keyed control, stay with the heavy duty mortise body.
How fast can I get the BEST 45H7CHB15H626 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 45H7CHB15H626 come with a warranty?
Absolutely. The BEST 45H7CHB15H626 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 45H7CHB15H626?
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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