Sargent BP-8243 Office or Entr...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$674.60
$387.03
Sargent BP-8243 Office or Entry Lock Function with Deadbolt Mortise Body

Sargent BP-8243 Office or Entry Lock Function with Deadbolt Mortise Body

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Model: BP-8243-26D
From the 8200 Series Collection
Selected Finish is

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

$674.60
$387.03
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Sargent 8200 Series Office or Entry Lock Function Mortise Body with Deadbolt and 2-3/4" Backset

Professional Mortise Lock Solution with Integrated Deadbolt Security

The Sargent 8200 Series mortise lock deadbolt is designed and constructed with the highest quality components to provide maximum security, performance and durability. This robust mortise body features a 2-3/4" (70mm) backset and accommodates doors from 1-3/8" (35mm) to 6" (152mm) thick. The lock body includes cold forged steel hubs for exceptional durability and offers 54 functions including 4 electrical functions for versatile commercial applications.

Professional Features & Benefits

  • Door Thickness Compatibility: Accommodates doors ranging from 1-3/8" (35mm) to 6" (152mm) thick for versatile installation options.
  • Standard Backset Configuration: 2-3/4" (70mm) backset only for consistent installation requirements.
  • Heavy-Duty Construction: Cold forged steel hubs and brass, bronze or stainless steel front plate provide exceptional durability for commercial applications.
  • Extensive Function Options: 54 functions including 4 electrical functions offer comprehensive range for diverse applications.
  • Minimum Stile Requirements: 4-1/2" (114mm) minimum stile for standard functions, 4-3/4" (121mm) minimum stile for electrical function locks.
  • Field Reversible Design: Lock is easily re-handed without removing parts or opening the lock case for installation flexibility.
  • ANSI/BHMA Compliance: Front plate meets ANSI/BHMA Standard A156.115 for professional-grade performance standards.
  • Manufacturer Warranty: 10 year limited warranty on mechanical components, 2 year limited warranty on electrified locks for added confidence and protection.

Technical Specifications

  • Refer to manufacturer documentation for complete technical specifications.

Installation & Operation

  1. Review manufacturer specifications and verify door preparation requirements including door thickness, stile width, and handing as applicable to this product.
  2. Use manufacturer-provided templates to mark mounting hole locations accurately on door and/or frame surfaces.
  3. Prepare door and frame by drilling required holes and routing as specified in manufacturer instructions.
  4. Install all mounting hardware and secure the device to door and frame per manufacturer torque specifications.
  5. Adjust operational components for proper alignment, latching, and smooth operation throughout the full range of motion.
  6. Test device operation to verify proper function 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 Sargent Quality?

Sargent 8200 Series mortise locks deliver professional-grade reliability with cold forged steel construction and brass, bronze or stainless steel components rated for demanding commercial use. Backed by a 10 year limited warranty on mechanical components and 2 year limited warranty on electrified locks. Engineered for demanding commercial applications where dependable performance and comprehensive function options are essential.

Product Specs

Series:
8200 Series
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Subcategory:
Bored Locksets
Commercial/Residential:
Commercial
Lock Type:
Mortise
Lock Function:
Office/Entry
Product Type:
Mortise Locks
Duty Level:
Heavy Duty
Product Attribute:
Mortise Body Lock
Electronic:
No
Product Function:
Entrance/Office
Product Category:
Mechanical Locks
Collection:
8200 Series
Department:
Door Hardware

Sargent BP-8243-26D – Frequently Asked Questions

1) What backset does the Sargent 8200 mortise lock use, and can I get it in 2-3/8 inch?
2-3/4 inches (70mm) only. Sargent does not offer the 8200 mortise body in any other backset, so if your door is already prepped for a 2-3/8 inch backset, this is the wrong part. 2-3/8 and 2-3/4 inches are the two standard backsets in the trade, and mortise locks are near-universally 2-3/4; a 2-3/8 prep usually means the existing hardware is a bored cylindrical lock, not a mortise, and a mortise body will not drop into that prep at all.
2) What does office or entry function mean on a mortise lock with a deadbolt?
Office/entry is the function you want on a tenant suite or office door that has to be lockable from inside without a key but still keyed from the hall. The BP-8243 body carries both a latchbolt for everyday use and a separate deadbolt for when the space is secured. Compare that to the other functions in the same family: storeroom (like the Accentra 8805FL) keeps the outside lever fixed and always locked, classroom (the Corbin Russwin ML2003) locks the outside from the corridor by key, and privacy with deadbolt (the Cal-Royal NM8440) has no keyed outside function at all. Office/entry is the one that gives the occupant control of the door.
3) How wide does the door stile need to be for a Sargent 8200 mortise lock?
4-1/2 inches (114mm) minimum stile for standard mechanical functions, and 4-3/4 inches (121mm) minimum if you are using one of the electrical function locks. That is a wide stile requirement, so it rules out narrow stile aluminum storefront doors. If the opening is a narrow stile glass door, a mortise body of this size will not go in, look at a deadlatch style lock instead, such as the Alarm Lock DL1300NW built for Adams Rite deadlatch preps, or the Kaba Ilco BR Series bottom rail lock for all-glass doors.
4) Is the Sargent 8243 the whole lockset or just the lock body?
Just the mortise body. The BP-8243 is the lock case that goes into the pocket in the door, it does not include the lever or knob trim, the roses or escutcheons, or the cylinder. You order trim and cylinder separately to match the rest of the building. If you want a lock that arrives with the trim on it, the Cal-Royal NM8050 is a complete Grade 1 office/entrance mortise lockset, and the Hager 3850E office mortise ships with lever and escutcheon.
5) I need to replace a mortise lock in an office door that has a thumbturn deadbolt. Is a Sargent 8200 the right swap?
If the existing lock is a mortise case with a latch plus a separate deadbolt on an office or tenant door, the BP-8243 is the matching function, it is the office/entry configuration with a deadbolt in one body. Three things decide whether it drops in: the prep must be 2-3/4 inch backset, the stile at least 4-1/2 inches, and door thickness between 1-3/8 and 6 inches. Your existing trim and cylinder are ordered separately since this is the body alone, so check those against what you plan to reuse.
6) What Grade 1 mortise lock has an office/entry function if the Sargent 8200 mortise body is not an option?
The Cal-Royal NM8050 is a heavy duty Grade 1 mortise lockset with an Entrance/Office function and an auxiliary deadlatch, the same function designation the Sargent BP-8243 carries. The NM8050 is listed for 1-3/4 inch doors, while the Sargent 8200 body accepts doors from 1-3/8 inch to 6 inch, so confirm your leaf thickness before swapping. The Sargent body also carries an integrated deadbolt; the Cal-Royal pairs its latch with an auxiliary deadlatch instead.
7) Which mortise lock should I use if the door needs to stay locked outside at all times instead of office/entry?
Office/entry function, which the Sargent BP-8243 provides, lets staff leave the outside lever unlocked during business hours. If the opening must stay secured from the outside around the clock, a storeroom function is the right call: the Accentra 8805FL is a Grade 1 storeroom mortise lock with an Arcadia lever, and the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset offered with an interchangeable core option for facilities keyed on an IC system.
8) Is the Baldwin 6301 mortise lock body a drop-in replacement for a Sargent 8200 mortise body?
No. The Baldwin 6301 is an entry/apartment mortise lock body built on a 2-1/2 inch backset, while the Sargent BP-8243 is a 2-3/4 inch backset only. A 2-1/2 inch backset body will not line up with a door already prepped for the Sargent 8200 mortise pocket and cylinder hole. The Baldwin 6301 is offered knob by knob and as the 6301LS lever by lever, both listed for doors 1-3/4 inch and over.
9) What mortise lock do I order if the opening needs a keypad instead of a key?
The Sargent BP-8243 is a non-electronic mechanical mortise body. For keypad access on a mortise-prepped opening, the Alarm Lock DL3500CR is a Grade 1 Trilogy electronic mortise lock with 300 user codes in classroom function, and the Dormakaba E-Plex 2066 is an electronic pushbutton keyless mortise lock for wide stile applications. The Alarm Lock Trilogy units are listed for doors 1-5/8 inch to 1-7/8 inch thick, a much narrower range than the 1-3/8 inch to 6 inch the Sargent body accepts, so verify the leaf.
10) Do I have to order a Sargent 8200 mortise lock handed, or can I re-hand it on the job?
No handing to specify. The 8200 mortise body is field reversible and re-hands without removing parts or opening the lock case, so one part number covers left and right hand openings. That matters if you are stocking spares for a building with mixed swings, one body on the shelf serves any door. Note the contrast with locks that do commit you at the order: the Baldwin 6310190RRLS mortise lock is sold specifically as right hand reverse.
11) Is the Sargent 8200 mortise lock Grade 1, and is it heavy enough for a high traffic entrance?
Grade 1 and heavy duty rated, for commercial use. Construction is cold forged steel hubs with a brass, bronze, or stainless steel front plate, the hubs being the part that takes the abuse when a lever gets hung on. The front plate meets ANSI/BHMA A156.115. Grade 1 is the top of the three ANSI/BHMA operational grades and the level normally specified on institutional and high traffic commercial openings, so this is the right class of lock for a main office corridor or a multi-tenant entry.
12) Can I get the Sargent 8200 mortise body with an electrified function for access control?
The 8200 Series runs 54 functions, 4 of them electrical, so an electrified version exists in the family, but the BP-8243 body itself is not electronic. Two things change if you go electrical: the minimum stile goes from 4-1/2 to 4-3/4 inches, and you need to specify the electrical function rather than this mechanical office/entry one. If you want access control on the opening, other options we carry include the BEST 45HW wired electromechanical mortise lock at 12V/24V, the Command Access ML190 motorized mortise with field selectable EL/EU operation on 24VDC, and the Schlage L9092EU with electric lock/unlock outside lever, keyed outside and request to exit on 12/24VDC.
13) What is the difference between a mortise lock like the Sargent 8200 and a cylindrical lock for an office door?
A mortise lock drops into a rectangular pocket routed into the door edge and carries the latch and, on the 8243, a deadbolt in one steel case, which is why it takes a 4-1/2 inch minimum stile. A cylindrical lock needs only a round cross bore, installs faster, and suits a door that is already bored that way, the Schlage PC10 Grade 1 passage is an example of the bored type. Choose mortise when you want the deadbolt and the heavier case on a high traffic or exterior opening, and stay cylindrical when the existing prep is a bore and you do not need a deadbolt in the same case.
14) What is the equivalent mortise lock for a classroom door rather than an office door?
For classroom openings, 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 heavy duty Grade 1 classroom mortise lockset with an auxiliary deadlatch, also for 1-3/4 inch doors. Both carry Grade 1 like the Sargent BP-8243, but classroom function keys the outside lever from the corridor side rather than allowing the office/entry latch-holding operation the Sargent body provides.
15) What is the difference between a mortise body with a deadbolt and a separate mortise deadbolt like the Kaba Ilco 185?
The Sargent BP-8243 is a single mortise body combining the office/entry latch and the deadbolt in one case, so one pocket serves both. The Kaba Ilco 185 Series is a deadbolt-function mortise lock with no handing, supplied as a standalone bolt with no latch or lever operation. Use the 185 where the opening only needs a bolt; use the 8243 body where the door must latch and also bolt from the same prep.
16) Which Grade 1 mortise locks are field reversible like the Sargent 8200 body?
The Sargent BP-8243 is re-handed in the field without removing parts or opening the lock case. The Falcon MA101 is a Grade 1 heavy duty mortise lock with field reversible operation in passage function, and the BEST 45HCAC mortise lock body is a heavy duty field reversible unit in public entrance function. Field reversibility matters when you are stocking one body for openings of both hands; the function differs across the three, so match function to the opening first.
17) What should I use instead on a restroom or bedroom door where the Sargent office/entry function is wrong?
Office/entry is a keyed function and the wrong choice 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 listed for doors 1-3/4 inch to 2 inch. The Hager shares the 2-3/4 inch backset of the Sargent BP-8243, so an existing 2-3/4 inch prep carries over.
18) Is there a non-keyed mortise lock for an interior door that does not need the Sargent 8243 deadbolt?
Yes. For an opening that 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 Hager 3850E is a Grade 1 non-keyed office mortise lock with lever and escutcheon on a 2-3/4 inch backset for doors 1-3/4 inch to 2-1/2 inch. The Hager matches the 2-3/4 inch backset of the Sargent BP-8243. Neither includes the integrated deadbolt the Sargent body carries.
19) Can a Schlage L0170 half dummy be used in place of a Sargent 8243 mortise body?
No. The Schlage L0170 is a half dummy trim, a non-keyed Grade 1 mortise lever with no latching or locking mechanism, used on an inactive leaf for pull only. The Sargent BP-8243 is a working mortise body with an office/entry latch and a deadbolt. Emtek offers the same idea in decorative form with the 3102 Memphis and 3106 Manhattan mortise entrance locksets in dummy function. A dummy never secures an opening.
20) What mortise lock takes a credential reader if the facility is moving off mechanical keys?
The Sargent BP-8243 is a mechanical, non-electronic body. For credentialed access on a mortise opening, 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 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, supplied without a deadbolt.
21) Is a cylindrical lock like the Schlage PC10 an alternative to the Sargent 8200 mortise body?
Not on the same door prep. The Schlage PC10 is a Grade 1 passage cylindrical lock with rose for 1-3/4 inch doors, which installs in bored holes through the face of the leaf. The Sargent BP-8243 is a mortise body that seats in a rectangular pocket routed into the door edge. Converting between the two means re-prepping the door, so cylindrical and mortise are not interchangeable on an existing opening even at the same grade.
22) What mortise lock should go on a behavioral health or ligature resistant opening rather than a standard office/entry lock?
The Sargent BP-8243 is a standard commercial office/entry body with a deadbolt and projecting trim. Where ligature resistance is required, 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 in satin stainless arch trim, and the Marks USA 5PDN is a Grade 1 ligature resistant, ADA compliant hospital passage push/pull paddleset in satin stainless steel.
23) What is the difference between the Sargent BP-8243 and the Baldwin 6310 entry/storeroom mortise body?
The Sargent BP-8243 is an office/entry function body with a deadbolt, a 2-3/4 inch backset only, and a door range of 1-3/8 inch to 6 inch. The Baldwin 6310 is an entry/storeroom function mortise body on a 2-1/2 inch backset for doors 1-3/8 inch and over, offered knob by knob and, as the 6310190RRLS, in a right hand reverse lever by lever configuration. The backset difference is the deciding detail on an existing prep.
24) Which mortise lock carries a stated fire rating for a rated corridor opening?
Among mortise options with a published fire rating, the Schlage Electronics LEMD-GRW ENGAGE wireless mortise lock and the LEBMB-ADD mobile enabled mortise lock both list a 3 hour fire rating; the LEMD-GRW is Grade 1 and the LEBMB-ADD is Grade 2 with privacy, office and apartment functions. The Falcon MA101 Grade 1 heavy duty mortise passage lock is also fire rated. Confirm the rating against the door and frame label on the opening.
25) What mortise lock suits an ornamental iron or thin gate door where the Sargent 8243 will not fit?
The Sargent BP-8243 starts at 1-3/8 inch door thickness. For a thinner section, the Marks USA 21AC is an entrance double cylinder Unilock ornamental iron mortise lock with a round knob listed for 1 inch material, and the 22AC is the same entrance double cylinder ornamental iron configuration in the 22 Series, also 1 inch. Both are keyed both sides rather than office/entry function.
26) What finish does the Sargent BP-8243 mortise body come in?
26D, satin chromium plated over nickel, which is the satin chrome look that reads as a match alongside satin stainless and 626 trim on the rest of a commercial building. On a mortise body the visible finish is the front plate and faceplate in the door edge, so if the building standard is satin chrome or brushed stainless, the edge of the door will look consistent with the trim and the strike.
27) Is there an installation template for the Sargent 7800 and 8200 mortise locks?
Yes. Sargent publishes a template covering the 7800 and 8200 Series mortise locks with all sectional rose trims and escutcheon trims, plus a full 7800/8200 mortise lock catalog for function selection. Use the template to lay out the pocket and the through-bolt and spindle holes before you rout, since the mortise pocket depth and the hub centers have to be right the first time on a 2-3/4 inch backset prep.
28) Is there a lighter duty mortise latch for a low traffic interior door instead of a Grade 1 body?
The Sargent BP-8243 is a heavy duty Grade 1 commercial body. Where the traffic does not justify that, the Codelocks CL2255 is a medium duty electronic tubular mortise latch in the CL2000 Series with a brushed steel finish. Stepping down in duty level changes the cycle expectation, so it suits a storage or back office door rather than a main entrance.
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Does the Sargent BP-8243-26D come with a warranty?
Absolutely. The Sargent BP-8243-26D is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
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