Marks USA MAR195DB 195DB Class...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$407.21
$205.23
Marks USA 195DB Classroom Intruder Clutched Lever Lockset, Marks C Keyway, 6 Pin

Marks USA MAR195DB 195DB Classroom Intruder Clutched Lever Lockset with Breakaway Handles, Marks C Keyway, 6 Pin

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Model: 195DB/26D
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Marks USA 195DB Classroom Intruder Clutched Lever Lockset with Breakaway Handles, Marks C Keyway, 6 Pin

The Marks USA 195DB is a Grade 1 commercial cylindrical lever lockset engineered for classroom intruder protection, featuring "The Clutch" — a mechanism that disengages the outside lever when locked, allowing it to spin freely without opening the latch and dramatically reducing torque-related failure risk. Supplied with 6-pin cylinders in Marks "C" keyway and 2 nickel-silver keys, this lockset withstands torque of 1,800 inch-pounds — over twice the ANSI/BHMA (1996) test value — and has been life tested over 6 million cycles with full operability after testing. Designed for doors 1-5/8" to 1-7/8" thick (K1704 spacer required for 1-3/8" doors), it supports a standard 2-3/4" backset with optional 2-3/8", 3-3/4", and 5" backsets available. UL Listed and 3-hour fire rated, the 195DB is ADA compliant and built for demanding commercial environments.

Key Features

  • Clutch Mechanism — "The Clutch": When locked, the outside lever disengages and spins freely without actuating the latch, eliminating the excessive torque that causes rigid-lever locksets to fail under forced entry attempts.
  • Exceptional Torque Resistance: Withstands 1,800 inch-pounds of torque — more than twice the ANSI/BHMA (1996) test value — for superior security in high-risk environments.
  • Heavy-Duty Cycle Rating: Life tested over 6 million cycles with full operational integrity maintained after testing, ensuring long-term reliability in high-traffic applications.
  • Breakaway Handles: American and Crescent design breakaway handles protect against excessive abuse and lever manipulation attempts.
  • Cast Stainless Steel Retractor with Bronze Roller Bearings: Delivers ultra-high strength, smooth operation, and extended service life.
  • Solid Cast Zamac Levers: Levers feature a 1/2" return; rose is thru-bolted at 3-7/16" diameter with spring-loaded 2-#10 thru-bolts for vibration-proof mounting using #10 epoxy-coated bolts.
  • Latch & Strike Specifications: Latch #1834 with 1-1/8" x 2-1/4" front, 9/16" throw, and stainless steel nose; Strike #1135, 4-7/8" ASA curved lip.
  • Door Thickness Compatibility: Fits doors 1-5/8" to 1-7/8" thick; use K1704 spacer for 1-3/8" doors. Standard backset 2-3/4"; optional 2-3/8", 3-3/4", and 5" backsets available.
  • Electrified Function Option: 100% duty cycle; 24V/AC supplied with bridge rectifier; 24V/DC at 0.21 Amps; 12V/DC optional. Request to Exit (REX) Switch available: single pole, double throw, 3 amp, 125 AC, wired normally open or normally closed (not standard).
  • Versatile Function Availability: Available in Passage, Privacy, Patio, Communicating, Entry, Exit, Classroom, Storeroom, Institution, Vestibule, Corridor, Store Door, Hospital/Privacy, Service Station Lock, Classroom Intruder, Dummy Trim, and more.

Certifications & Compliance

  • ANSI/BHMA Grade 1 — Exceeds ANSI/BHMA (1996) torque test value by over 2x
  • UL Listed
  • 3-Hour Fire Rated
  • ADA Compliant

Technical Specifications

  • Series: 195 Series
  • Product Group: Mechanical Locks
  • Product Subgroup: Bored Locksets
  • Product Type: Cylindrical Locks
  • Subcategory: Cylindrical Locks
  • ANSI/BHMA: ANSI/BHMA, UL Listed
  • Commercial/Residential: Commercial
  • Lock Type: Cylindrical
  • Function Description: Latch retracted by knobs/levers at all times
  • ADA Compliant: Yes
  • Keyed: No
  • ANSI Function: F75
  • Product Attribute: Cylindrical Locks
  • Product Function: Passage/Hall/Closet
  • Latch Type Specification: Deadlocking
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • K-12 Schools and Educational Facilities Requiring Classroom Intruder Lockdown Capability
  • Universities and Higher Education Buildings
  • Healthcare Institutions and Hospital Corridors
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Retail and Service Establishments
  • Multi-Tenant Residential and Institutional Properties

Why Marks USA 195DB?

The Marks USA 195DB stands apart from conventional lever locksets through its patented clutch mechanism, which eliminates the torque-induced failures common in rigid-lever designs by allowing the outside lever to spin freely when locked. With a verified torque resistance of 1,800 inch-pounds — more than double the ANSI/BHMA (1996) standard — and a life test exceeding 6 million cycles, the 195DB delivers the durability and security performance that demanding commercial and institutional environments require. UL Listed, 3-hour fire rated, and ADA compliant, it is a trusted solution wherever classroom intruder protection and long-term reliability are non-negotiable.

Manufacturer Resources

Marks USA Product Catalog

Product Specs

Series:
195 Series
Latch Throw:
9/16"
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Bored Locksets
Product Type:
Cylindrical Locks
Subcategory:
Cylindrical Locks
ANSI/BHMA:
ANSI/BHMA, UL Listed
Commercial/Residential:
Commercial
Lock Type:
Cylindrical
Function Description:
Latch retracted by knobs/levers at all times
Front Size:
1-1/8” x 2-1/4”
ADA Compliant:
Yes
Keyed:
No
ANSI Function:
F75
Product Attribute:
Cylindrical Locks
Product Function:
Passage/Hall/Closet
Latch Type Specification:
Deadlocking
Product Category:
Mechanical Locks
Backset (Distance):
2-3/4"
Department:
Door Hardware

Marks USA 195DB/26D – Frequently Asked Questions

1) Will the Marks USA 195DB fit a 1-3/8 inch door?
Not as supplied. The 195DB is built for doors 1-5/8 inch to 1-7/8 inch thick. For a 1-3/8 inch door you need the K1704 spacer, which is ordered separately. Most commercial openings are 1-3/4 inch, which falls in the standard range with no extra parts.
2) Will the Marks 195DB latch fit my existing door prep and strike?
It ships with the #1834 latch on a 2-3/4 inch backset with a 1-1/8 x 2-1/4 inch front and a 9/16 inch deadlocking throw, plus the #1135 strike with a 4-7/8 inch ASA curved lip. That is the common commercial prep, so if your door is already bored for a 2-3/4 inch backset cylindrical lock with an ASA strike, it drops in. Optional backsets of 2-3/8, 3-3/4 and 5 inches are available if your existing bore does not match.
3) What does the clutch mechanism on the Marks 195DB actually do in a lockdown?
When the lock is secured, the outside lever disengages and spins freely instead of driving the latch. Someone yanking or prying on that lever is turning nothing, so the torque never reaches the internal works. That is the failure mode that kills rigid-lever locksets during a forced entry attempt. The 195DB is rated to 1,800 inch-pounds of torque, more than twice the ANSI/BHMA (1996) test value.
4) Is the Marks 195DB approved for a fire rated classroom door?
Fire rated to 3 hours and UL Listed, and it carries ANSI/BHMA Grade 1. It is also ADA compliant, which matters on an egress-side lever in a school corridor.
5) What do I need to specify when ordering the Marks 195DB lever lockset?
Two choices. Finish comes in US10B oil-rubbed dark bronze or US26 polished chrome. Cylinder is either Standard, which ships with 6-pin cylinders in the Marks C keyway and two nickel-silver keys, or G3 less cylinder if you are supplying your own to match an existing key system. If you need a backset other than 2-3/4 inches, call that out as well.
6) What is a comparable classroom intruder lockset if I want electronic keypad credentialing instead of a keyed mechanical lock?
The Marks USA 195DB is a mechanical Grade 1 cylindrical lever lockset with a 6-pin Marks C keyway cylinder, so lockdown is done with a key. For a keypad-credentialed alternative, the TownSteel XCE-9000 is a Grade 1 electronic classroom intruder cylindrical lockset with a keypad, fitting doors 1-3/4 inch to 2 inch thick. The TownSteel FCE-4000 is an RFID electronic intruder classroom cylindrical lockset, Grade 1, for 1-3/4 inch doors. Both put lockdown on a code or credential rather than a key, and both carry their own power and battery service requirements that the mechanical 195DB does not.
7) The Marks USA 195DB fits doors 1-5/8 inch to 1-7/8 inch. What Grade 1 cylindrical lock covers a thicker or thinner door without a spacer?
The 195DB covers 1-5/8 inch to 1-7/8 inch doors and needs the K1704 spacer at 1-3/8 inch. Where the opening falls outside that band, the Dorma C150 is a Grade 1 heavy-duty cylindrical lock rated 1-3/8 inch to 2-1/4 inch in entry/office function, and the Dorma C853 is a Grade 1 entry keyed single cylinder lever lockset over the same 1-3/8 inch to 2-1/4 inch range. Cal-Royal's CAL30 passage lock is Grade 1 and covers 1-3/8 inch to 2 inch. None of those three offer the clutched classroom intruder function, so they suit general entry or passage openings rather than lockdown-rated classrooms.
8) Which locks look like substitutes for the Marks USA 195DB but will not give me classroom intruder lockdown?
Several Grade 1 cylindrical locks share the body style but not the function. The Schlage CO-100 keypad lock is Grade 1 heavy duty but privacy function on 1-3/4 inch doors. The Alarm Lock Trilogy 4100 is Grade 1 with privacy function. The CENTRIOS CEB100 Bluetooth cylindrical lock is privacy as well, and the Cal-Royal CAL20 is a Grade 1 privacy lock. Privacy function locks are meant for restrooms and single-occupant rooms and release from the inside with a simple turn or emergency tool, so they do not deliver the keyed lockdown behavior of the 195DB classroom intruder function with its clutched outside lever.
9) Can I key the Marks 195DB into the master key system already in my building?
If your school is on a Marks C keyway, the standard 6-pin cylinder keys right in. If you are on Schlage, Best, Corbin or any other system, order the G3 less cylinder option and install your own cylinder so the lock joins your existing masterkeying rather than adding a second key for the custodian to carry.
10) How long will a Marks 195DB hold up on a high traffic classroom door?
Life tested past 6 million cycles with full operation after the test. Inside it uses a cast stainless steel retractor running on bronze roller bearings, and the rose is thru-bolted at 3-7/16 inch diameter with two spring-loaded #10 epoxy-coated bolts so it does not work loose from door slam. The levers are solid cast Zamac with a 1/2 inch return.
11) Should I use a mechanical classroom intruder lock like the Marks 195DB or go electronic?
Mechanical is the simpler path: no batteries, no wiring, no credential management, and a teacher locks the door from inside with a key. Go electronic when you want audit trail, credentials, or remote lockdown. Among electronic classroom intruder options ZenSupply carries, the TownSteel XCE-9000 Series is a keypad classroom intruder cylindrical lockset for 1-3/4 to 2 inch doors, and the TownSteel FCE-4000 Series is the RFID version for 1-3/4 inch doors. Both are Grade 1, same as the 195DB.
12) Can I get the Marks 195DB with an electric strike or electrified function for access control?
Marks offers an electrified version of the lock at 100 percent duty cycle. 24V AC is supplied with a bridge rectifier, 24V DC draws 0.21 amps, and 12V DC is optional. A request-to-exit switch is available but is not standard, single pole double throw, 3 amp at 125 AC, wired normally open or normally closed. Specify the voltage and the REX wiring state when you order.
13) I need to standardize a whole building on one lockset line. Does the Marks 195 Series cover functions other than classroom intruder?
The 195 Series runs the full function range: passage, privacy, patio, communicating, entry, exit, classroom, storeroom, institution, vestibule, corridor, store door, hospital/privacy, service station, classroom intruder and dummy trim. That lets a school or hospital spec one lever style, one rose and one finish across corridors, offices, restrooms and classrooms while changing only the function.
14) Is a cheaper Grade 1 passage or privacy lever a fair substitute for the Marks 195DB?
Not for a lockdown opening. The 195DB's value is the clutch and the 1,800 inch-pound torque resistance under attack. If you just need Grade 1 hardware on non-lockdown doors, the Cal-Royal CAL30 is a Grade 1 passage lever and the CAL20 is the Grade 1 privacy version, both covering 1-3/8 to 2 inch doors, and the Dorma C853 is a Grade 1 keyed entry lever for 1-3/8 to 2-1/4 inch doors. None of those are classroom intruder locks.
15) Is there a lighter-duty cylindrical lever alternative to the Marks USA 195DB for low-traffic interior doors?
Yes. The 195DB is a Grade 1 commercial lockset rated for 6 million cycles with 1,800 inch-pounds of torque resistance, which is more than most interior offices or closets require. For lighter service, the Orca Hardware OCL210 is a Grade 2 medium duty passage cylindrical lockset, the OCL240 is a Grade 2 medium duty privacy lockset, and the OCL250 is a Grade 2 medium duty entrance lockset. The Dorma CL701 is a Grade 2 single dummy non-keyed lever. These are not substitutes anywhere a classroom lockdown or Grade 1 spec is called out on the drawing.
16) What Grade 1 cylindrical lock would I use instead of the Marks USA 195DB if the school wants access control and audit trail?
The 195DB is a mechanical lockset with a 6-pin Marks C keyway and no electronics in its standard form, so it produces no access records. Where the district wants credential management and reporting, the Schlage NDEB is a Grade 1 heavy duty wireless cylindrical lock with 2.4 GHz Bluetooth Low Energy in storeroom, office, privacy and apartment functions for 1-5/8 inch to 2 inch doors. The Alarm Lock T3 DL3075 is a Grade 1 electronic cylindrical lock with audit trail and keypad access. The Schlage XE360M is a Grade 1 wireless tubular lock in classroom/storeroom function with a smart mobile reader for 1-3/4 inch doors.
17) I need an electrically controlled cylindrical lock tied into an access control panel rather than the Marks USA 195DB electrified option. What else works?
The Marks USA 195DB offers an electrified function at 100 percent duty cycle, 24V/AC with bridge rectifier or 24V/DC at 0.21 amps, with 12V/DC optional and a request-to-exit switch available. If you prefer a purpose-built fail-safe or fail-secure solenoid unit, the SDC Electra 7200 Series is a solenoid controlled cylindrical lock with dual voltage 12/24VDC for doors 1-3/4 inch to 2 inch. For a standalone battery unit with no panel wiring, the SDC E75 Series is a battery-powered electronic cylindrical lockset with keypad access control for 1-3/4 inch to 2-1/8 inch doors.
18) How does the Marks USA 195DB compare with a keypad cylindrical lock for a school that keys everything to one system?
The 195DB ships with 6-pin cylinders in the Marks C keyway and two nickel-silver keys, and can be ordered less cylinder if you are supplying your own cores to match an existing system. Among keypad alternatives, the Alarm Lock Trilogy T2 DL2700 is a Grade 1 standalone electronic cylindrical entrance lock with 100 user codes and is IC/SFIC compatible for doors 1-5/8 inch to 1-7/8 inch, the same thickness band the 195DB covers. The BEST 9KZ EZ Series is an electronic keypad cylindrical lock with key override. Both give a mechanical key path alongside codes, which matters when a master key system has to reach every door.
19) Is a residential smart lever an acceptable substitute for the Marks USA 195DB on a commercial corridor door?
No. The 195DB is specified commercial, Grade 1, UL Listed and 3-hour fire rated with a deadlocking latch. The Kwikset 912TNL ZW500 SmartCode lever with Z-Wave is a keyed-one-side residential-style product covering 1-3/8 inch to 2 inch doors. If you want a code-operated lock that still carries a Grade 1 commercial rating, look at the Accentra nexTouch NTB613 Grade 1 cylindrical keypad lock or the TownSteel XCE-2000, a Grade 1 heavy duty electronic cylindrical lockset with keypad in classroom function for 1-3/4 inch to 2 inch doors.
20) I need a plain Grade 1 entry lever, not the classroom intruder function of the Marks USA 195DB. What matches on strike and backset?
The 195DB uses a 2-3/4 inch standard backset with a #1135 strike, 4-7/8 inch ASA curved lip. Among entry-function levers, the Stanley Security QCL150 is an entry lever with a Sierra bent lever and rose, less cylinder, square 2-3/4 inch backset latch and a 4-7/8 inch by 1-1/4 inch ASA strike, so the door prep lines up closely. The Dorma C853 is a Grade 1 entry keyed single cylinder lever lockset for 1-3/8 inch to 2-1/4 inch doors. Neither provides the clutched lever behavior of the 195DB.
21) Do the levers on the Marks 195DB break away, and does that mean I replace the lock after an attack?
The 195DB uses American and Crescent design breakaway handles that give way under abuse or lever manipulation, protecting the lock body rather than the whole unit. Paired with the clutch, the intent is that the attack energy never reaches the retractor. Levers are solid cast Zamac with a 1/2 inch return, so replacement is at the handle, not the chassis.
22) If I only need matching dummy trim on an inactive leaf beside a Marks USA 195DB opening, what should I order?
The 195DB series includes dummy trim among its function offerings, which keeps the lever profile and finish consistent across the pair of doors. If you are sourcing dummy trim separately, the Dorma C501 is a single dummy trim keyless lever lockset, Grade 2, for doors 1-3/8 inch to 1-3/4 inch, and the Orca Hardware OCL2170 is a Grade 2 medium duty half dummy lever. Dummy trim has no latch and is surface-fastened, so it does not interchange with the 195DB latch and 4-7/8 inch ASA strike prep.
How fast can I get the Marks USA 195DB/26D 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 Marks USA 195DB/26D come with a warranty?
Absolutely. The Marks USA 195DB/26D 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 Marks USA 195DB/26D?
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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