Marks USA MAR5SS19B 5SS19B Lif...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$948.64
$391.25
Marks USA 5SS19B LifeSaver Entrance Lever Mortise Lock - Institutional LifeSaver Mortise Lock, Anti-Ligature, Entrance

Marks USA MAR5SS19B 5SS19B LifeSaver Anti-Ligature Entrance Lever Mortise Lock - Grade 1, Institutional, Bright Stainless Steel

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Model: 5SS19B-32D
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$948.64
$391.25
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Marks USA 5SS19B LifeSaver Anti-Ligature Entrance Lever Mortise Lock — Grade 1 Institutional, Bright Stainless Steel

The Marks USA 5SS19B LifeSaver is a Grade 1 institutional mortise lock engineered specifically for behavioral health and detention facility environments where ligature resistance is a critical safety requirement. Featuring the SS19 lever rose style in Bright Stainless Steel (Polished Stainless), this entrance-function lockset is designed for 1-3/4 in. door thickness with a 2-3/4 in. backset and a 4-7/8 in. curved lip strike plate. Constructed from stainless steel with a stamped steel case measuring 1-1/16", the 5SS19B incorporates clutch lever and needle bearing technology for smooth, durable operation. The lockset is cULus Listed, BHMA certified, UL Listed for 3-hour fire rating, and fully ADA compliant, backed by Marks USA's lifetime mechanical warranty.

Key Features

  • Anti-Ligature Design: Ligature-resistant SS19 lever and rose configuration engineered to meet the demanding safety requirements of behavioral health and detention facility applications.
  • Door Thickness Compatibility: Designed for 1-3/4 in. door thickness with a 2-3/4 in. backset for precise, secure installation in standard commercial door preparations.
  • 4-7/8 in. Curved Lip Strike: Includes a 4-7/8 in. curved lip strike plate for reliable latch engagement and proper door frame alignment.
  • Grade 1 Construction: Stainless steel body with stamped steel case (1-1/16") and front size of 1-1/8" x 2-1/4" delivers commercial-grade durability rated to BHMA Grade 1 standards.
  • Clutch Lever & Needle Bearings: Integrated clutch lever and needle bearing mechanism provide smooth lever operation and long-term resistance to forced entry and wear.
  • Entrance Function (ANSI F21 / F75): Outside lever locked/unlocked by key (Marks C keyway, 2 keys included); inside lever always free for egress — ideal for controlled-access institutional entry points.
  • Non-Handed Design: Non-handed configuration simplifies installation and reduces inventory requirements across multiple door openings.
  • Lifetime Mechanical Warranty: Backed by Marks USA's lifetime mechanical warranty for long-term confidence in high-demand institutional environments.

Certifications & Compliance

  • BHMA Certified — Grade 1
  • cULus Listed
  • UL Listed — 3-Hour Fire Rating
  • ADA Compliant
  • Ligature-Resistant
  • Marks USA Lifetime Mechanical Warranty

Technical Specifications

  • Series: 5SS19 Series
  • Latch Throw: 9/16"
  • Grade: Grade 1
  • Product Subgroup: Bored Locksets
  • Product Type: Cylindrical Locks
  • Subcategory: Cylindrical Locks
  • ANSI/BHMA: ANSI/BHMA, UL Listed
  • 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
  • Backset (Distance): 2-3/4"
  • Department: Door Hardware

Typical Applications

  • Behavioral Health Facilities and Psychiatric Units
  • Detention and Correctional Facilities
  • Healthcare Institutions and Hospitals
  • Educational Facilities and Campus Buildings
  • Government and Municipal Buildings
  • Commercial Office Buildings
  • Multi-Tenant Residential and Assisted Living Properties

Why Marks USA 5SS19B LifeSaver?

Marks USA's 5SS19B LifeSaver mortise lock is purpose-built for institutional environments where safety and durability cannot be compromised. The stainless steel construction, clutch lever mechanism, and needle bearing design deliver Grade 1 performance certified to BHMA and cULus standards, including a 3-hour fire rating and full ADA compliance. Engineered for behavioral health and detention applications, this lockset provides the anti-ligature protection and long-term reliability that demanding commercial and institutional facilities require.

Manufacturer Resources

Marks USA Product Catalog

Product Specs

Series:
5SS19 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 5SS19B-32D – Frequently Asked Questions

1) Do I have to order the Marks USA 5SS19B handed for a left or right hand door?
No handing to specify. The 5SS19B LifeSaver is non-handed, so one part covers both swings. For a facility standardizing across a floor of behavioral health rooms, that means a single stocked item instead of a left and right pair.
2) Is the Marks USA 5SS19B anti-ligature lock rated for a fire door?
It's cULus Listed and UL Listed for a 3-hour fire rating, and it's BHMA certified to Grade 1. ADA compliant as well. That combination is what lets it go on a rated corridor or stairwell opening in a hospital or detention facility rather than just an interior room door.
3) What makes the Marks USA 5SS19B LifeSaver an anti-ligature lock, and where is it actually used?
The SS19 lever and rose are shaped so there's no point to loop a cord or sheet over. That's the whole design intent. It's specified in behavioral health and psychiatric units, detention and correctional facilities, and patient areas of hospitals. On an ordinary office corridor a conventional lever lockset does the job, and the lever shape of a ligature-resistant unit buys you nothing there.
4) Will the 5SS19B latch into my existing strike, or do I need to change the frame prep?
Latch throw is 9/16 in. and the latch is deadlocking. The 4-7/8 in. curved lip strike is included, so if your frame already has an ASA 4-7/8 in. prep you're in good shape. On an older frame cut for a smaller strike, plan on filling and re-prepping the jamb.
5) How does the entrance function on the Marks USA 5SS19B work from each side of the door?
Outside lever locks and unlocks by key, inside lever is always free so anyone can get out without a key or a thumbturn. That's the ANSI F75 entrance arrangement. It's the right pick for a controlled-access door into a unit, not for a patient room where you want privacy from the inside.
6) I need an anti-ligature lock on a door that isn't 1-3/4 inch thick. What are my options?
The 5SS19B is a single-thickness lock at 1-3/4 in., so a thicker or thinner leaf rules it out. Among the Grade 1 cylindrical locks we carry with a wider range, the Cal-Royal CAL20 privacy and CAL30 passage locks in the Calypso Series both cover 1-3/8 in. to 2 in., and the Dorma C150 entry/office lock covers 1-3/8 in. to 2-1/4 in. None of those are ligature-resistant, so if that's a hard requirement on the opening, change the door rather than the lock.
7) What is the closest Grade 1 alternative to the Marks USA 5SS19B for a standard entrance opening that does not need anti-ligature hardware?
The Dorma C150 is a Grade 1 cylindrical lock in entry/office function covering 1-3/8 in. to 2-1/4 in. door thickness, and the Dorma C853 is a Grade 1 entrance-function keyed lever lockset in the C800 Series with the same 1-3/8 in. to 2-1/4 in. thickness range. Both carry the entrance function a 5SS19B opening uses, but neither is built with the ligature-resistant lever and rose geometry the 5SS19B LifeSaver uses for behavioral health and detention work, so they suit corridor, office and tenant entry doors rather than patient rooms.
8) Which lock should be used instead of the Marks USA 5SS19B on a classroom door that needs lockdown capability?
The TownSteel XCE-9000 Series is a Grade 1 electronic classroom intruder cylindrical lockset with a keypad, for 1-3/4 in. to 2 in. doors, and the TownSteel FCE-4000 Series is a Grade 1 RFID electronic intruder classroom lockset for 1-3/4 in. doors. Both are built around classroom function with a lockdown credential at the door. The Marks USA 5SS19B is a mechanical entrance lock keyed to the Marks C keyway with the inside lever always free for egress, so lockdown on a 5SS19B opening is done with a key rather than from a keypad or card.
9) Can an electronic keypad lock be substituted for the Marks USA 5SS19B in a behavioral health facility?
Not on a ligature-risk opening. The Alarm Lock Trilogy T2 DL2700 Series is a Grade 1 standalone electronic cylindrical entrance lock for 1-5/8 in. to 1-7/8 in. doors, the Schlage NDEB ENGAGE Series is a Grade 1 heavy duty wireless cylindrical lock for 1-5/8 in. to 2 in. doors, and the SDC E75 Series is a battery-powered electronic cylindrical lockset with keypad for 1-3/4 in. to 2-1/8 in. doors. Each adds credential control the Marks USA 5SS19B does not have, but they use standard lever and keypad housings rather than the ligature-resistant SS19 lever and rose the 5SS19B LifeSaver uses for patient areas. Those units belong on staff-side and administrative doors in the same building.
10) What keyway does the Marks USA 5SS19B use and does it come with keys?
It's cut to the Marks C keyway and two keys come in the box. If your building is keyed to a different manufacturer's system, this won't key into that system as supplied, so budget for rekeying to your existing bitting.
11) What holds up better on an abused door, the Marks LifeSaver lever or a standard Grade 1 cylindrical lockset?
The 5SS19B uses a clutch lever with needle bearings, so when someone hangs on or wrenches the outside lever while it's locked, the lever spins free instead of transmitting that force into the lock. On a general-purpose opening where ligature resistance isn't a requirement, a Grade 1 entrance lockset like the Dorma C853 from the C800 Series covers 1-3/8 in. to 2-1/4 in. doors and gives you a wider thickness range.
12) Can I get credentialed or keypad access on a behavioral health door instead of a key?
The 5SS19B is a mechanical key-operated lockset, no electronics. If you want audit trail or code entry on that opening, the Grade 1 electronic cylindrical locks we carry for 1-3/4 in. doors include the TownSteel FCE-2000 with RFID and the XCE-2000 keypad lock (1-3/4 in. to 2 in.), plus the Schlage NDEB ENGAGE wireless lock for 1-5/8 in. to 2 in. doors. None of them are ligature-resistant units, so weigh that against the access control you want.
13) Which alternatives to the Marks USA 5SS19B fit a 1-3/4 inch door?
Among Grade 1 peers, the TownSteel FCE-2000 Series and FCE-4000 Series are both listed for 1-3/4 in. doors, the Schlage XE360M wireless tubular lock is listed for 1-3/4 in., the TownSteel XCE-2000 Series covers 1-3/4 in. to 2 in., and the SDC Electra 7200 Series solenoid controlled cylindrical lock covers 1-3/4 in. to 2 in. The Marks USA 5SS19B is built for 1-3/4 in. door thickness on a 2-3/4 in. backset with a 1-1/8 in. x 2-1/4 in. front, so a door already prepped for it takes any of those thickness ranges, subject to the prep each unit requires.
14) What is the difference between the Marks USA 5SS19B and a Grade 2 entrance lever like the Orca OCL250?
The Orca Hardware OCL250 is a Grade 2 medium duty entrance cylindrical lockset, and the Stanley QCL100 Series QCL150 entry lever is likewise a Grade 2 entrance lever with a 2-3/4 in. backset latch and a 4-7/8 in. x 1-1/4 in. ASA strike. The Marks USA 5SS19B is Grade 1, BHMA certified and cULus Listed with a 3-hour fire rating, on a 2-3/4 in. backset with a 4-7/8 in. curved lip strike. A facility standardizing to a Grade 1 institutional spec will not take a Grade 2 lever as an equal; a light-traffic interior entry door is where the Grade 2 units sit.
15) What is a simpler non-keyed option for doors that do not need the keyed entrance function of the Marks USA 5SS19B?
The Cal-Royal CAL30 is a Grade 1 extra heavy duty passage lock in the Calypso Series for 1-3/8 in. to 2 in. doors, and the Orca OCL210 is a Grade 2 medium duty passage cylindrical lockset. Passage function means the latch retracts from either lever at all times with no cylinder to key, so it fits closets, corridors and utility rooms. The Marks USA 5SS19B is an entrance lock whose outside lever is locked and unlocked by key, which is what a controlled-access institutional entry point needs.
16) Is a dummy lever a substitute for the Marks USA 5SS19B on an inactive leaf?
No. The Dorma C501 is a Grade 2 single dummy trim keyless lever lockset for 1-3/8 in. to 1-3/4 in. doors, the Dorma CL701 is a Grade 2 single dummy non-keyed cylinder lever lockset in the CL700 Series, and the Orca OCL2170 is a Grade 2 half dummy lever. Dummy trim is a pull only, with no latch and no strike engagement. The Marks USA 5SS19B carries a deadlocking latch with a 9/16 in. throw into a 4-7/8 in. curved lip strike, so it is the unit on any leaf that has to latch.
17) What should be specified instead of the Marks USA 5SS19B for a patient bathroom or privacy opening?
The Cal-Royal CAL20 is a Grade 1 extra heavy duty privacy lock in privacy/bed/bath function for 1-3/8 in. to 2 in. doors, and the Schlage CO-100 CY 40 KP is a Grade 1 heavy duty standalone electronic privacy lock for 1-3/4 in. doors. Privacy function locks from the inside with an outside emergency release. The Marks USA 5SS19B is an entrance function lock keyed from the outside, which is what a controlled entry door takes rather than a bath or toilet room.
18) What finish does the Marks USA 5SS19B LifeSaver come in?
One finish: US32D satin stainless steel, over a stainless steel body. In a wet-cleaned environment like a psychiatric ward or a correctional wing, stainless takes repeated disinfectant wipe-downs better than a plated brass finish would.
19) Is a Grade 1 lock overkill for a school or municipal building corridor?
Grade 1 is the top commercial cycle and strength tier under ANSI/BHMA, and on high-traffic openings it's what specifiers write. The 5SS19B is BHMA certified Grade 1 and rated commercial. For lower-traffic interior doors where budget matters, Grade 2 cylindrical locksets such as the Orca OCL250 entrance or OCL210 passage are medium duty and cost less to standardize on.
20) Does a mechanical pushbutton keyless lock replace the Marks USA 5SS19B?
The Lockey 2830 is a mechanical pushbutton keyless knob lock with auto-locking passage function for 1-1/8 in. to 2 in. doors, and the Lockey 1600 is a heavy duty mechanical keyless knob lock with adjustable backset for the same 1-1/8 in. to 2 in. range. Both remove the key from the opening entirely and both use a knob rather than a lever. The Marks USA 5SS19B is ADA compliant with lever operation and a key-controlled outside lever, so on an accessible route the lever operation is the deciding difference.
How fast can I get the Marks USA 5SS19B-32D delivered?
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Can I return it if it doesn’t work for me?
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Does the Marks USA 5SS19B-32D come with a warranty?
Absolutely. The Marks USA 5SS19B-32D 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 5SS19B-32D?
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