BEST 45H Series Heavy Duty Mor...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$1,435.00
$922.78
BEST BEST 45H Series (INL - Intruder Latch Function) - Rose Trim Heavy Duty Mortise Lock, Double Keyed BES-45H-INL-RS

BEST 45H Series Heavy Duty Mortise Lock with Intruder Latch Function and Rose Trim

(No reviews yet) Write a Review

Model: 45H7INL15H626
$1,435.00
$922.78
Selected Finish is
Selected Lever Style is
Selected Trim Style is

In Stock (leaves warehouse same day if ordered before 3pm ET)

$1,435.00
$922.78
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

BEST 45H Series Heavy Duty Mortise Lock with Intruder Latch Function and Rose Trim

Professional Grade Mortise Lock with Enhanced Security Features

The BEST 45H Series Heavy Duty Mortise Lock delivers commercial-grade security with intruder latch function and rose trim configuration. This double keyed mortise lock features a 2-3/4" backset and solid stainless steel construction for demanding commercial applications. Built to ANSI A156.13 Series 1000 Grade 1 Operation and Strength standards with Grade 2 Security rating, this lock provides reliable performance in high-traffic environments.

Professional Features & Benefits

  • Heavy-Duty Case Construction: 0.095" cold rolled steel case measuring 5-7/8" H x 7/8" D x 4-1/16" W with zinc dichromate plating for superior corrosion protection and durability.
  • 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.
  • Reversible Operation: Field-reversible latch rotates 180 degrees for easy handing change without opening case, plus 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.
  • Roller Bearing Hub Mechanism: Provides smooth, wear-resistant operation with four position hub toggle design for customizable locking configurations.
  • ANSI Grade 1 Compliance: 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 strength.
  • 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 (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 case assembly into mortise pocket and secure with provided mounting hardware following manufacturer torque specifications.
  5. Configure four position hub toggle settings for desired locking operation and install trim components with self-aligning mechanism for accurate positioning.
  6. Test lock operation including latch function, deadbolt throw, key operation, and lever return spring mechanism to verify proper alignment and smooth operation throughout full range of motion. 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 latch components engineered for demanding commercial applications. ANSI Grade 1 Operation and Strength certification ensures dependable performance in high-traffic environments. Enhanced case integrity through four-corner screw design and armored front protection provides the durability and security required for critical access control applications.

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 45H7INL15H626 – Frequently Asked Questions

1) Will the BEST 45H mortise lock fit a door thicker than 1-3/4 inches?
Standard 45H lock bodies are built for 1-3/4 inch doors. If your opening is thicker, BEST builds a thick-door configuration good for doors up to 5 inches, but you have to state the actual door thickness when you place the order. There is no field adjustment for it, so measure the leaf before ordering rather than after.
2) What does the INL intruder latch function on a BEST 45H mortise lock actually do?
INL is a double-keyed function: the 45H INL takes a cylinder on both sides, so the lock can be secured with a key from inside the room without anyone stepping into the corridor. That is the lockdown behaviour schools and clinics specify. Both cylinder preps come as SFIC less core, so you supply and key the cores to your own system.
3) Does a BEST 45H lock come with cylinders, or do I have to order cores separately?
No cores ship in the lock. The 45H is prepped for BEST small format interchangeable core and supplied less core, which is why locksmiths and facility shops like it: you drop in your own SFIC and the opening joins your existing keying system on day one. Order two cores for the INL function, since it is keyed on both sides.
4) Will a BEST 45H mortise lock latch into the strike that is 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, and the faceplate is 8 x 1-1/4 x 1/16 inches. If the existing prep is a standard ANSI mortise pocket with those numbers, it drops in. Where an old strike lip sits shallow, the 1 inch deadbolt is the part that will tell you first, so check deadbolt engagement, not just the latch.
5) Do I have to specify handing when I order a BEST 45H mortise lock?
Handing is not a purchase decision here. The 45H latchbolt is reversible in the field, rotating 180 degrees without opening the case, and the cylinder retainer and auxiliary bolt are non-handed. One part number covers left and right hand openings, which matters if you stock spares for a building with doors swinging both ways.
6) Which mortise lock replaces a BEST 45H when the door has to be released from an access control system?
The 45H is a mechanical lock with no electronics. To put an opening on access control while keeping a mortise prep, the Command Access ML190 Series is a heavy duty motorized mortise lock with field selectable fail safe or fail secure 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, running on 12 or 24VDC for 1-3/4 inch doors. Both require power to the door leaf, which the 45H does not.
7) What is a comparable Grade 1 mortise lock to the BEST 45H if the opening only needs a storeroom function instead of a double cylinder intruder latch?
The BEST 45H is a keyed mortise lock supplied with a double cylinder keyed function and a 2-3/4 inch backset. If the opening only calls for storeroom operation, the Accentra 8805FL is a Grade 1 storeroom mortise lock in the 8800 Series, and the Cal-Royal NM8080 is a Grade 1 storeroom mortise lockset with an interchangeable core option for doors 1-3/4 inch thick. Both replace the outside-key-plus-inside-key arrangement with a single keyed side that stays locked while the inside lever always retracts the latch.
8) Which mortise lock should be used instead of the BEST 45H INL on a classroom door that needs a keyed classroom function?
The 45H INL is set up as a double cylinder keyed mortise lock, which keys both faces of the door. 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. Classroom function keys the outside lever only and leaves the inside lever free at all times, which is the arrangement most school and campus specifications call for.
9) What is the difference between the BEST 45H intruder latch lock and the TownSteel FME-4000 electronic intruder classroom mortise lock?
The BEST 45H is a mechanical mortise lock with no electronics, keyed on both sides with a 2-3/4 inch backset and an SFIC prep supplied less core. The TownSteel FME-4000 Series is an electronic intruder classroom mortise lockset with RFID technology, Grade 1 heavy duty, for 1-3/4 inch doors. Both address lockdown of a classroom-type opening, but the 45H does it entirely with a key from either face, while the FME-4000 does it through credentials read at the door.
10) Is a Sargent 4874 mortise deadbolt the same thing as a BEST 45H double cylinder mortise lock?
No. The Sargent 4874 is a double cylinder mortise deadbolt in the 4870 Series with a 2-3/4 inch backset -- it throws a bolt and nothing else, with no latch and no lever. The BEST 45H is a heavy duty mortise lock with both a latchbolt and a deadbolt in one case, carrying lever or knob trim on a rose. They share the double cylinder keying and the 2-3/4 inch backset, so the 4874 is the right part only when the opening already has a separate latch and needs auxiliary bolt security added.
11) What should be specified instead of a BEST 45H on a behavioral health or anti-ligature opening?
The 45H uses lever and knob trim on a rose, including solid tube, curved and gull wing levers and a round knob, all of which present a graspable projection. Where an anti-ligature opening is being specified, the TownSteel MRX-A-01 is a Grade 1 heavy duty ligature resistant arch trim mortise lockset in satin stainless steel, the MRX-L-01 is the Grade 1 heavy duty anti-ligature lever version, 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-type trim, so any keying the opening needs has to be addressed separately.
12) Which rose and lever do I pick on a BEST 45H, and does the rose size change the prep?
Three rose options: H is a 2-3/4 inch flat rose, R is a 2-3/4 inch concave rose, and S is a 3-1/2 inch flat rose. The larger S rose is the one to use when you are covering scars from previous trim on a retrofit. Lever and knob choices are 3 solid tube with return, 12 solid tube without return, 4 round knob, contour with angle return, curved with return, curved without return, and gull wing. Return-style levers are the usual call for accessible openings.
13) Which finish should I order for a hospital or school where surfaces get wiped down constantly?
Two antimicrobial finishes are built for that: 626AM satin chrome and 630AM satin stainless, both with the UltraShield coating that inhibits bacterial growth on the hardware surface. BEST calls these out for hospital, elderly care, education, transportation, food service and hospitality work. The full finish range runs 605, 606, 611, 612, 613, 618, 619, 622, 625, 626, 629, 630 and 690, so you can match existing trim on the rest of the building where cleanliness is not the driver.
14) Will the 613 oil-rubbed bronze finish on a BEST 45H stay the same as the rest of my doors?
No, and that is deliberate. The 613 oxidized satin bronze is designed to wear over time into an antique appearance, so a new lock installed alongside older 613 trim will not match at first and older 613 will keep changing. 690 dark bronze holds a dark brown appearance over time. For a fleet of openings that must look identical, a plated finish like 626 satin chrome or 630 satin stainless is the safer standard.
15) I need a classroom lockdown lock but my building runs Corbin Russwin or TownSteel. What are my options?
For a mechanical equivalent on a 1-3/4 inch door, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset, and Cal-Royal's NM8070 is a Grade 1 classroom mortise lockset. If you want credentialed lockdown rather than a key, TownSteel's FME-4000 Series is an electronic intruder classroom mortise lockset with RFID, Grade 1, for 1-3/4 inch doors. The BEST 45H INL is the all-mechanical route: key-operated from either side, no power, no batteries.
16) Is a mortise lock like the BEST 45H the right choice, or should I use a cylindrical lock?
A mortise lock means routing a pocket into the door edge, which is more prep than a cylindrical lock but gets you a separate 1 inch deadbolt and a 3/4 inch latch in one case, plus a 0.095 inch cold rolled steel case that carries the load. That is the call for exterior and high-traffic commercial openings. If the door is already bored for a cylindrical lock and you are not adding a deadbolt, something like the Schlage PC10 Grade 1 passage cylindrical lock is far less work. Retrofitting a cylindrical prep to mortise means a new door or a heavy repair.
17) If a door only needs to latch and never lock, is there a simpler alternative to the BEST 45H mortise lock?
Yes. The 45H is a keyed mortise lock with a double cylinder function, so it carries cylinders on both faces. Where the opening only needs to latch, 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 keep the mortise pocket prep but drop the cylinders and the locking hub entirely.
18) What mortise lock works for a dormitory or corridor door where the BEST 45H double cylinder function is more than the opening needs?
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. Like the BEST 45H it is a heavy duty mortise lock on rose trim, but it carries one cylinder rather than the 45H double cylinder arrangement, and its deadbolt retracts on egress from the inside -- the behavior corridor and dorm room specifications usually require.
19) Is a Hager 3800 Series mortise lock an equivalent to the BEST 45H?
They share the 2-3/4 inch backset, so the door face prep lines up, but the functions are not equivalent. The BEST 45H is keyed with a double cylinder function. The Hager 3810S and 3810E are Grade 1 passage mortise locks at a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch, the 3810S on a rose and the 3810E on an escutcheon, and the Hager 3850E is a Grade 1 non-keyed office mortise lock with lever and escutcheon at the same backset. None of the three carries a keyed cylinder, so they suit openings where the 45H double keying is not wanted.
20) What mortise lock should be used for a restroom or patient room where the BEST 45H keyed function is not appropriate?
The 45H is keyed on both faces, which is not what a privacy opening calls for. 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, matching the 45H backset. Both are thumbturn-operated from inside with emergency release outside rather than key operated. If the room is a healthcare space where surface cleanliness drives the specification, the 45H itself is offered in 626AM and 630AM UltraShield antimicrobial finishes.
21) Will an Emtek mortise entrance lockset work as a substitute for a BEST 45H?
No, and the reason is function rather than fit. 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 latch and no keying behind it. The BEST 45H is a keyed double cylinder heavy duty mortise lock for commercial openings. The Emtek pieces are for inactive leaves and decorative applications only.
22) What is the alternative to a BEST 45H on a door too thin for a standard mortise lock case?
The BEST 45H standard configuration is built for 1-3/4 inch doors, with a thick door configuration available up to 5 inches when specified at time of order. Where the leaf is thinner, the Marks USA 21AC and 22AC entrance double cylinder ornamental iron mortise locks are built for 1 inch doors and keep the double cylinder entrance arrangement with a round knob. That covers ornamental iron and narrow gate leaves that will not accept the 45H case.
23) Is a cylindrical lock like the Schlage PC10 an option where a BEST 45H is specified?
They are different door preps and not interchangeable. The BEST 45H is a mortise lock whose case drops into a pocket routed into the door edge, at a 2-3/4 inch backset. The Schlage PC10 is a Grade 1 non-keyed passage cylindrical lock with rose for 1-3/4 inch doors, which mounts through a bored hole in the door face. Converting an opening from one to the other means changing the door prep entirely, so the PC10 belongs on new or already-bored doors rather than on an existing mortise pocket.
24) What keypad mortise lock covers the same commercial openings as a BEST 45H without keys?
The BEST 45H is mechanical and ships with an SFIC prep less core, so access is controlled by the key system. For keyless operation on a mortise prep, the Alarm Lock DL3500CR Trilogy is a Grade 1 electronic mortise lock with 300 user codes and classroom function for doors 1-5/8 inch to 1-7/8 inch, the DL2700CR is a Grade 1 Trilogy T2 classroom mortise lock with weatherproof design in the same thickness range, and the Dormakaba E-Plex E5086 is a Grade 1 entry/egress electronic pushbutton and card back to back mortise lock. Note the Alarm Lock units are rated to 1-7/8 inch doors, narrower than the 45H thick door range.
25) How does the BEST 45H differ from the Cal-Royal NM8050 office entrance mortise lockset?
Both are Grade 1 heavy duty mortise locksets for 1-3/4 inch doors. The Cal-Royal NM8050 is an office/entrance function with an auxiliary deadlatch, so the outside lever can be left unlocked or locked by a button or turn as the office is occupied. The BEST 45H is a double cylinder keyed lock with a 1 inch throw deadbolt in addition to its 3/4 inch latchbolt, and it uses a four position hub toggle to set the locking configuration. Where the 45H suits a door that must be bolted with a key from either side, the NM8050 suits a tenant suite entry that is unlocked during business hours.
26) Is the Codelocks CL2255 a substitute for a BEST 45H mortise lock?
They serve different openings. The Codelocks CL2255 is an electronic tubular mortise latch in the CL2000 Series with a medium duty rating, in a brushed steel finish. The BEST 45H is a heavy duty mortise lock built to ANSI A156.13 Series 1000 Grade 1 Operation and Strength with a 0.095 inch cold rolled steel case. On a high-traffic commercial opening carrying a Grade 1 requirement, the CL2255 medium duty rating is the deciding difference.
27) Is the BEST 45H heavy enough for a high-traffic corridor?
It is a heavy duty commercial lock. The case is 0.095 inch cold rolled steel, zinc dichromate plated, measuring 5-7/8 x 7/8 x 4-1/16 inches, closed with four cover screws at the corners and tied into an interlocking armored front at the latch. The latchbolt is solid one-piece stainless with an oil-impregnated anti-friction surface and roughly 50 percent more contact area with the strike, running on a roller bearing hub. That is the construction behind the Grade 1 Operation and Strength rating.
28) Does the BEST 45H mortise lock meet accessibility requirements for lever operation?
BEST states the design and operation of its mortise lock meets the intent of ANSI A117.1 section 404.2.6. On the trim side, choose a lever rather than the 4 round knob if the opening is on an accessible route, and the return-style levers (3 solid tube with return, curved with return, contour with angle return) are the ones normally specified where levers must not snag clothing.
29) Can I set the BEST 45H lock to behave differently on the inside than the outside?
Yes, through the four position hub toggle in the case. Set the toggles during installation to pick which side is free and which is controlled, so one lock body covers several locking behaviours instead of stocking a different case for each. The armored front is a staked assembly that self-aligns as you set it in the pocket, and the lock face adjusts to the door bevel on its own during installation.
How fast can I get the BEST 45H7INL15H626 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 45H7INL15H626 come with a warranty?
Absolutely. The BEST 45H7INL15H626 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 45H7INL15H626?
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
Why buy the BEST 45H7INL15H626 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!