BEST 45H Series Heavy Duty Mor...
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$1,435.00
$922.78
BEST BEST 45H Series (C - Entrance Function) - Rose Trim Heavy Duty Mortise Lock, Double Keyed BES-45H-C-RS

BEST 45H Series Heavy Duty Mortise Lock with Rose Trim - Entrance Function Double Cylinder

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Model: 45H7C15H626
$1,435.00
$922.78
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,435.00
$922.78
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BEST 45H Series Heavy Duty Mortise Lock with Rose Trim - Entrance Function Double Cylinder

Professional Grade Mortise Lock for Commercial Applications

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 with 0.095" cold rolled steel construction 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 long-term durability in 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.
  • Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation for consistent performance throughout the lock’s service life.
  • Reversible Operation: Non-handed design with reversible latch that rotates 180 degrees for easy handing change without opening the case, plus four-position hub toggle for flexible configuration.
  • Armored Front Protection: Completely surrounds latch and deadbolt providing increased lateral strength with staked assembly design for self-alignment during installation.
  • ANSI Grade 1 Certified: Meets ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards with Grade 2 Security rating for commercial applications.
  • Enhanced Case Integrity: Four case cover screws at each corner plus interlocking armored front and cover design at the latch for maximum structural integrity.
  • Cylinder Security Features: Solid machined cylinder rings with wavy washer provide 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), mortise pocket dimensions, and handing requirements.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and frame surfaces for proper backset and faceplate positioning.
  3. Prepare door mortise pocket and drill required holes for cylinder, trim mounting, and through-bolts per manufacturer specifications.
  4. Install lock case into mortise pocket and secure with provided screws, ensuring proper alignment with door edge and bevel.
  5. Install cylinder, trim components, and strike hardware according to manufacturer torque specifications and alignment procedures.
  6. Test lock operation including latch and deadbolt function, key operation from both sides, and lever return mechanism to verify proper installation and smooth operation throughout full range of motion.

Professional Applications

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

Why Choose BEST Quality?

BEST 45H Series mortise locks deliver professional-grade reliability with heavy-duty 0.095" cold rolled steel construction and solid stainless steel components engineered for demanding commercial applications. ANSI A156.13 Series 1000 Grade 1 Operation and Strength certification ensures consistent performance and security. The enhanced anti-friction latch design and roller bearing hub mechanism provide superior durability where dependable access control is 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 45H7C15H626 – Frequently Asked Questions

1) Will the BEST 45H mortise lock fit a door thicker than 1-3/4 inches?
Standard configuration of the 45H mortise lock is built for 1-3/4 inch doors. BEST does make a thick door configuration for doors up to 5 inches, but the thickness has to be specified at time of order, so it isn't a field adjustment. If you're locking a thick wood or clad door, call out the exact thickness on the order.
2) Do I need to order the BEST 45H handed, left or right?
No. The 45H case is non-handed. The latch reverses by rotating 180 degrees without opening the case, and there's a four-position hub toggle for configuration. That's useful for a property manager stocking one spare for a whole building instead of a left and a right.
3) What does the C entrance function do on the BEST 45H, and why is it called double cylinder?
Entrance/office function, keyed both sides. The 45H C is a double cylinder entrance lock, so you key from the outside and from the inside rather than using a thumbturn. Common on tenant suite doors and offices where you don't want inside egress hardware to be operable without a key. Check your local egress code before putting a double cylinder on a required exit door.
4) Does the BEST 45H come with cores, or do I have to supply them?
It ships prepped for a small format interchangeable core but without the core. You supply the SFIC cores in your keyway and keying so the lock drops into an existing BEST-keyed system. Since this is the double cylinder entrance version, that's two cores per opening.
5) Will the BEST 45H latch into the strike already in my frame?
The latchbolt is solid stainless with a 3/4 inch throw and the deadbolt throws 1 inch, on a 2-3/4 inch backset with an 8 x 1-1/4 x 1/16 inch faceplate. If the frame is already prepped for a standard ANSI mortise lock with that backset and an 8 inch face, it lines up. What you do need to confirm is that the existing strike has a deadbolt pocket, since a latch-only strike from a non-deadbolting mortise lock won't accept the 1 inch bolt.
6) What is the closest equivalent to a BEST 45H entrance function mortise lock from another manufacturer?
The Cal-Royal NM8050 is the nearest match: it is a heavy duty Grade 1 mortise lockset with an entrance/office function, the same function the BEST 45H C entrance lock provides. The NM8050 is specified for 1-3/4 inch doors, while the 45H is built in a standard configuration for 1-3/4 inch doors with a thick-door configuration available up to 5 inches when specified at order. The 45H also comes prepped for a small format interchangeable core less core, which matters if you are keying into an existing SFIC system.
7) Which mortise lock should I use for a storeroom door instead of the BEST 45H entrance lock?
An entrance function lock like the BEST 45H C allows the outside lever to be locked or left unlocked; a storeroom function keeps the outside lever locked at all times and requires a key on every entry. For that, 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 offered with an interchangeable core option, which is useful if you key on an SFIC system as the 45H does with its interchangeable core prep.
8) Is the Baldwin 6301 mortise lock body a drop-in substitute for the BEST 45H?
No. The Baldwin 6301 entry/apartment mortise lock body uses a 2-1/2 inch backset, while the BEST 45H is built on a 2-3/4 inch backset, so the door and trim prep are not interchangeable. The Baldwin 6301 is offered as knob by knob and as the 6301LS lever by lever, both for doors 1-3/4 inch and over. The Baldwin 6310 entry/storeroom body also uses a 2-1/2 inch backset. Confirm the existing mortise pocket backset before swapping between the two.
9) We want keypad or credential access on this opening instead of a key - what replaces the BEST 45H?
The BEST 45H C is a mechanical, non-electronic lock. For electronic access on a mortise prep, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for 1-5/8 inch to 1-7/8 inch doors, and the DL2700CR is a Grade 1 Trilogy T2 electronic mortise lock with classroom function and weatherproof design in the same door thickness range. The Accentra NTM623-NR in the nexTouch Series uses a capacitive touchscreen keypad with cylinder override and no deadbolt. TownSteel FME-2000 is a Grade 1 heavy duty RFID classroom mortise lockset for 1-3/4 inch doors. Note the Alarm Lock units do not cover the 1-3/4 inch door the 45H standard configuration is built for.
10) Is the Marks USA 21AC or 22AC mortise lock an alternative to the BEST 45H for an entrance door?
Only on a very different door. Both the Marks USA 21AC in the 21 Series and the 22AC in the 22 Series are entrance double cylinder ornamental iron mortise locks with a round knob, specified for 1 inch thick doors - these are narrow stile ornamental iron applications. The BEST 45H C is a commercial mortise lock whose standard configuration is designed for 1-3/4 inch doors, with a thick door configuration up to 5 inches when specified. They share the double cylinder entrance function but not the door they go into.
11) We need the opening to release on an access control signal - what mortise lock does that instead of the BEST 45H?
The BEST 45H C is mechanical only. For electrified mortise operation, the Command Access ML190 is a heavy duty motorized mortise lock with field selectable electrically locked or electrically unlocked operation on 24VDC and a 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. Field selectable EL/EU on the Command Access unit lets one part cover both fail safe and fail secure, which is worth knowing before you commit the spec.
12) For a behavioral health or psychiatric unit, is the BEST 45H the right mortise lock?
The 45H C is a standard commercial entrance mortise lock with lever and knob trim options, not anti-ligature hardware. For those units, 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 ligature resistant arch trim in satin stainless, 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. All three are passage function, so pair them with separate locking hardware where the opening needs to secure.
13) Will a BEST 45H work on an aluminum storefront or glass door?
The 45H standard configuration is built for 1-3/4 inch doors with a 8 inch high faceplate and a 2-3/4 inch backset, which is a wide stile commercial door prep rather than a narrow storefront stile. For aluminum and glass front openings, the Alarm Lock DL1300NW is a Trilogy Networx wireless electronic mortise lock with keypad made for Adams Rite deadlatches, the Dormakaba E-Plex 2066 is a wide stile electronic pushbutton keyless mortise lock, and the Kaba Ilco BR Series is a glass door bottom rail lock. Confirm the stile width and existing deadlatch before ordering either way.
14) 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. If you're specifying for a school, healthcare or government building, pick one of the lever styles rather than the 4 round knob option, since a knob won't satisfy an accessible-route opening.
15) What rose size and lever do I have to pick when ordering a BEST 45H?
Three things get specified. 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 with no return, 3 solid tube with return, 4 round knob, Contour with Angle Return, Curved with Return, Curved without Return, and Gull Wing. Then finish. The 3-1/2 inch S rose is the one to reach for when you're covering old prep holes or scarring from previous trim.
16) What's a good alternative to the BEST 45H if I need a rose trim mortise lock on a door thicker than 1-3/4 inches without a special order?
The Hager 3800 Series covers a 1-3/4 to 2-1/2 inch door thickness range as standard, with the 3810S in rose trim and 3810E in escutcheon, both on a 2-3/4 inch backset like the 45H. Those are passage function though, so they're only a substitute if the opening doesn't need keying. For a keyed opening on a thick door, the 45H thick door configuration up to 5 inches is the wider-reaching answer.
17) Is the BEST 45H an electronic or access-control lock?
No, it's a purely mechanical keyed mortise lock, no wiring, no reader, no power. If the project actually wants credential-based access on a mortise prep, look at electronic mortise locks such as the Dormakaba E-Plex E5086 Grade 1 pushbutton/card lock, the Schlage CO-100 standalone keypad mortise, or the Schlage ENGAGE LEMD-GRW Grade 1 wireless mortise with a 125kHz proximity reader.
18) For a healthcare facility we are standardizing hardware - does anything match the BEST 45H antimicrobial finish option?
The BEST 45H is offered in 626AM satin chrome and 630AM satin stainless steel with UltraShield antimicrobial protected coating, which inhibits growth of bacteria and other microbes on the hardware surface and is recommended for healthcare, elderly care, education, transportation, food service and hospitality. Among comparable mortise hardware, the Marks USA 5PDN hospital passage push/pull paddleset is supplied in satin stainless steel and the TownSteel MRX-A-01 in satin stainless steel, so the appearance pairs with 630, but the antimicrobial coating itself is a BEST UltraShield option.
19) What is a non-keyed alternative if I do not need a cylinder on the door?
The BEST 45H C is a keyed double cylinder lock, so it is more hardware than a door that needs no key. Non-keyed heavy duty mortise options include the Falcon MA101, a Grade 1 heavy duty fire rated mortise passage lock with field reversible operation, and the Schlage PM010, a Grade 1 non-keyed passage latch mortise lock for 1-3/4 inch doors. The Hager 3850E is a non-keyed Grade 1 office mortise lock with lever and escutcheon on a 2-3/4 inch backset, matching the 2-3/4 inch backset the 45H uses, and covers 1-3/4 inch to 2-1/2 inch doors.
20) Can I use an Emtek 3102 Memphis mortise entrance lockset in place of a BEST 45H?
No. The Emtek 3102 Memphis mortise entrance lockset is a dummy function, as are the Emtek 3104 Hamilton, 3106 Manhattan, and 3019 Brisbane. Dummy trim has no latch and no key function - it is surface applied for a fixed or inactive leaf. The BEST 45H C is a keyed double cylinder entrance function mortise lock with a 3/4 inch throw stainless latchbolt and a 1 inch throw deadbolt. If you need a matching inactive leaf alongside a working 45H, a dummy is the right part; if the leaf must latch, it is not.
21) I only need a mortise deadbolt, not a full lockset - what is the alternative to the 45H?
The BEST 45H C entrance lock combines a latchbolt with a 1 inch throw deadbolt in one case. If the opening needs deadbolt only, the Sargent 4874 in the 4870 Series is a double cylinder mortise deadbolt on a 2-3/4 inch backset, the same backset the 45H uses, so the edge prep dimension lines up. The Kaba Ilco 185 Series is a deadbolt function mortise lock with no handing. For an electronic deadbolt-only opening, the Alarm Lock DL4500 is a Grade 1 electronic mortise deadbolt with 2,000 user codes and privacy keypad for 1-5/8 inch to 1-7/8 inch doors.
22) What should I use on a restroom or bedroom door instead of the keyed BEST 45H?
An entrance function keyed lock is the wrong function for a privacy opening. 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 on a 2-3/4 inch backset covering 1-3/4 inch to 2 inch doors - the same 2-3/4 inch backset the BEST 45H uses, so the edge bore location is consistent if you are mixing functions down a corridor.
23) How does the BEST 45H compare to the Sargent 7900 Series for a dormitory or corridor door?
The Sargent 7925 is a Grade 1 heavy duty corridor/dormitory exit function mortise lock in the 7900 Series with rose trim and a single cylinder deadbolt. The BEST 45H C is a heavy duty entrance function mortise lock with double cylinder keying, meaning it is keyed from both sides rather than one. Both are offered with rose trim - the 45H in 2-3/4 inch flat, 2-3/4 inch concave, and 3-1/2 inch flat roses. Choose by whether the opening needs key control from both faces or only from the corridor side.
24) Is the Sargent 130KB thumbturn or the Falcon MESC600DT trim a substitute for a BEST 45H mortise lock?
Neither. The Sargent 130KB is a standard duty mortise thumbturn in the 8200 Series and the Sargent 130W is a standard duty mortise thumbturn with a round backplate in the 7800 Series - both are trim pieces that operate a lock, not the lock itself. The Falcon MESC600DT is dummy escutcheon lever trim for M9900 Series exit devices. The BEST 45H C is a complete heavy duty mortise lock case with latchbolt, deadbolt, rose trim and cylinder prep. If you are only replacing an inside turn piece or a face plate, the trim parts apply; if the case is failing, they do not.
25) Which BEST 45H finish should I use if I want the look to change with age versus stay consistent?
Fourteen finishes run from 605 bright brass through 630 satin stainless. Two behave differently over time: 613 oxidized satin bronze oil rubbed is designed to wear and develop an antique appearance, while 690 dark bronze stays a dark brown look. If you're matching a fleet of doors across a building and want them all identical five years out, 630 satin stainless or 626 satin chrome are the safe picks; 613 will not stay uniform across openings with different traffic.
26) Why does the BEST 45H latch hold up better in a high traffic entrance?
The latch is a solid one-piece stainless anti-friction design that BEST says gives 50 percent more surface contact with the strike, with a curve profile aimed at cycle life, and it's oil-impregnated. The hub runs on roller bearings. For a lobby or tenant suite door cycling all day, that's the part that usually fails first, so it matters more than the finish.
27) Can someone pull the cylinder off a BEST 45H from the outside?
The 45H uses solid machined cylinder rings with a wavy washer to resist wrenching, and a cylinder security screw that can't be reached until the interchangeable core is removed. The armored front wraps both the latch and deadbolt for lateral strength and is staked for self-alignment during install.
How fast can I get the BEST 45H7C15H626 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 45H7C15H626 come with a warranty?
Absolutely. The BEST 45H7C15H626 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 45H7C15H626?
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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