TownSteel MRX-L-33 Grade 1 Ant...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$983.00
$789.87
TownSteel TownSteel MRX-L-33 , Intruder Dead Bolt Funtion X Levers - Stainless Steel Grade 1 Heavy Duty Anti-Ligature Lever Mortise Lockset TWS-MRX-L-33

TownSteel MRX-L-33 Grade 1 Anti-Ligature Mortise Lockset with Stainless Steel Lever - Double Cylinder Intruder Function

(No reviews yet) Write a Review

Model: MRX-S-L-33-630
$983.00
$789.87
Selected Finish is
Selected Trim is

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

$983.00
$789.87
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

TownSteel MRX-L-33 Grade 1 Anti-Ligature Mortise Lockset with Stainless Steel Lever

The TownSteel MRX-L-33 is an ANSI Grade 1 heavy-duty mortise lockset engineered with a ligature-resistant stainless steel lever trim, available in escutcheon or sectional design, and built for behavioral, mental, and psychiatric healthcare facilities housing at-risk patients. This Double Cylinder Intruder function lockset includes a cylinder, tamper-resistant mounting screws, and is suitable for installation on both wood and metal doors with a 1-3/4" door thickness range. The 1-1/4" x 8" stainless steel face plate and 1-1/4" x 4-7/8" ASA strike round out a durable, security-focused design for demanding commercial applications.

Key Features

  • Door Thickness Compatibility: Engineered for doors with a 1-3/4" thickness range for standard commercial door preparation.
  • Face Plate: 1-1/4" x 8" stainless steel face plate for corrosion resistance and long-term durability.
  • Door Strike: 1-1/4" x 4-7/8" ASA strike for reliable, code-compliant frame preparation.
  • Ligature-Resistant Lever: Stainless steel lever trim designed to reduce ligature risk in behavioral and psychiatric care environments.
  • Tamper-Resistant Mounting Screws: Helps deter unauthorized removal or tampering in high-risk settings.
  • Double Cylinder Intruder Function: Includes a cylinder and is configured for Intruder function, keyed on both sides for added security.
  • Flexible Trim Options: Available in escutcheon or sectional trim to match facility design requirements.
  • Universal Door Mounting: Can be installed on both wood and metal doors for versatile application.

Certifications & Compliance

  • ANSI/BHMA Grade 1 heavy-duty mortise lock construction

Technical Specifications

  • Series: MRX-L Series
  • Product Group: Mechanical Locks
  • Product Subgroup: Mortise Locks and Trim
  • Commercial/Residential: Commercial
  • Keyed Function: Double Cylinder
  • Lock Function: Double Cylinder
  • Electronic: No
  • Product Function: Intruder
  • Door Thickness Range: 1-3/4"
  • Face Plate: 1-1/4" x 8", stainless steel
  • Door Strike: 1-1/4" x 4-7/8", ASA Strike
  • Product Category: Mechanical Locks
  • Department: Door Hardware

Typical Applications

  • Behavioral Health Facilities
  • Mental Health Treatment Centers
  • Psychiatric Care Institutions
  • Healthcare and Hospital Settings
  • Correctional and Detention Facilities
  • Commercial Office Buildings
  • Educational Facilities

Why TownSteel MRX-L?

TownSteel MRX-L Series mortise locksets combine ANSI Grade 1 construction with a stainless steel, ligature-resistant lever built for at-risk patient environments. Tamper-resistant hardware and a heavy-duty stainless steel face plate help the MRX-L-33 deliver professional-grade security for behavioral, mental, and psychiatric healthcare applications.

Product Specs

Series:
MRX-L Series
Grade:
Grade 1
Product Group:
Mechanical Locks
Product Subgroup:
Mortise Locks and Trim
Product Type:
Mortise Locks
Subcategory:
Mortise Locks
Commercial/Residential:
Commercial
Lock Type:
Mortise
Handle Type:
Lever
Keyed Function:
Double Cylinder
Duty Level:
Heavy Duty
Lock Function:
Double Cylinder
Product Attribute:
Mortise Locks
Electronic:
No
Product Function:
Intruder
Door Thickness Range:
1-3/4"
Face Plate:
1-1/4" x 8", stainless steel
Door Strike:
1-1/4" x 4-7/8", ASA Strike
Product Category:
Mechanical Locks
Department:
Door Hardware

TownSteel MRX-S-L-33-630 – Frequently Asked Questions

1) What does the intruder function on the TownSteel MRX-L-33 mortise lock actually do?
The MRX-L-33 is the intruder deadbolt function in the MRX-L anti-ligature mortise line. It's a double cylinder arrangement, so the deadbolt is thrown and retracted by key from either side of the door, with levers on both sides. That's the setup used where staff need to secure a room from inside the room during a lockdown, rather than having to step into the corridor to key the outside. Because both sides are keyed, keys have to be controlled and available on the secure side.
2) Is the MRX-L mortise lock suitable for a behavioral health or psychiatric patient room?
That's exactly what it's built for. The MRX-L is an ANSI Grade 1 mortise lock with ligature-resistant stainless steel lever trim, intended for behavioral, mental and psychiatric healthcare facilities housing patients at risk. It also uses tamper-resistant mounting screws so the trim can't be taken off with common tools. The lever geometry is the point: nothing on the trim gives a cord or sheet something to hang from.
3) What door thickness does the TownSteel MRX-L-33 fit, and can it go on a wood door?
It's built for 1-3/4 inch doors, which is the standard commercial leaf thickness, and it mounts on either wood or metal doors. If your opening is a thicker door or a 1-3/8 inch older interior leaf, this is not the lock for it.
4) Will the MRX-L-33 drop into an existing mortise prep and reuse my strike?
The lock body uses a 1-1/4 x 8 inch stainless steel face plate and ships with a 1-1/4 x 4-7/8 inch ASA strike. That is the standard ANSI mortise face and strike prep, so on a frame already cut for an ASA strike and a standard mortise pocket it lines up. What changes on a retrofit is the trim: the ligature-resistant escutcheon or sectional plates have their own screw pattern, so check the door face for old through-bolt holes showing outside the new plate.
5) Does the TownSteel MRX-L-33 come with cylinders, or do I need to buy them?
A cylinder is included with the lock. If you run a small format interchangeable core system, order the SFIC prep version instead, which comes prepped for SFIC and less core so you can drop in your own Best-style cores. Either way, pick your keying at order time: keyed different, keyed alike across multiple locks, or to a specific key code.
6) I need ligature-resistant hardware but the door is a passage opening with no key. What should I use instead of the MRX-L-33?
The MRX-L-33 is a double cylinder keyed intruder lockset, so it is the wrong choice for a non-keyed opening. 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, which suits a patient-area door that only needs to latch. Use the MRX-L-33 where the room has to be locked and unlocked by key from both sides.
7) What is the closest alternative to the TownSteel MRX-L-33 intruder mortise lock from another manufacturer?
The MRX-L-33 is a Grade 1 heavy duty mortise lockset with intruder function and a ligature-resistant stainless steel lever. The closest peer on function is the BEST 45HCAINL, a heavy duty mortise lock body with intruder function in the 40H Series. The difference is scope: the BEST part is a lock body, while the MRX-L-33 is a complete lockset supplied with cylinder and ligature-resistant escutcheon or sectional lever trim, mounting to wood or metal doors on 1-3/4 inch thickness.
8) If the opening does not need ligature resistance, what Grade 1 mortise lock can I use instead of the MRX-L-33?
For a standard behavioral-free opening, the Cal-Royal NM8080 is a heavy duty Grade 1 storeroom mortise lockset with an interchangeable core option, rated for 1-3/4 inch doors like the MRX-L-33. The Accentra 8805FL is another Grade 1 storeroom mortise lock, in the 8800 Series with an Arcadia lever. Neither carries the ligature-resistant stainless steel lever and tamper-resistant mounting screws that make the MRX-L-33 suited to behavioral, mental and psychiatric healthcare rooms.
9) Our spec calls for a Grade 1 classroom mortise lock on a 1-3/4 inch door. Does the MRX-L-33 meet it, or should I look at something else?
The MRX-L-33 is Grade 1 heavy duty on a 1-3/4 inch door but its function is intruder with double cylinder keying, not classroom. For a classroom function on the same door thickness, the Corbin Russwin ML2003 is a Grade 1 mortise classroom lockset in the ML2000 Series, and the Cal-Royal NM8070 is a heavy duty Grade 1 classroom mortise lockset with auxiliary deadlatch, both listed at 1-3/4 inch.
10) Should I order the escutcheon or the sectional trim on the MRX-L?
Both are offered and both are ligature resistant. The escutcheon (E) gives you one long plate covering the lever and cylinder, which hides more of the door face and any old prep holes underneath. The sectional (S) uses separate roses, so less stainless on the door and a lighter look. On a retrofit over an existing mortise lock, escutcheon is the safer choice for covering previous holes.
11) Can I key the MRX-L locks alike across a whole unit of patient rooms?
Yes. Keying is selected when the order is placed: KD keyed different, KA keyed alike for multiple locks, or a specific key code if you're adding to an existing system. For a ward where staff carry one key, specify KA on the full quantity in a single order so they're pinned together. If you standardize on SFIC instead, order the SFIC prep version and pin your own cores.
12) What's the difference between the TownSteel MRX-L intruder lock and a standard Grade 1 classroom or storeroom mortise lock?
Function and trim. The MRX-L-33 is an intruder deadbolt function with ligature-resistant stainless levers for at-risk patient areas. If you just need a secured corridor door with no ligature concern, a conventional Grade 1 lockset like the Cal-Royal NM8080 storeroom or the Corbin Russwin ML2003 classroom mortise covers it, both of which are also built for 1-3/4 inch doors. BEST also offers an intruder function in its 45HCA heavy duty mortise line if you're matching an existing BEST facility standard.
13) Can I use an electronic mortise lock in place of the TownSteel MRX-L-33?
Only if the opening is meant to be credential-controlled. The MRX-L-33 is a mechanical, non-electronic lockset keyed double cylinder. Electronic mortise alternatives include the Alarm Lock DL3500CR, a Grade 1 Trilogy electronic mortise lock with 300 user codes and classroom function for 1-5/8 to 1-7/8 inch doors, and the Schlage CO-100 standalone electronic mortise lock, Grade 1 heavy duty with keypad reader for 1-3/4 inch doors. Neither is offered with the ligature-resistant stainless steel lever trim of the MRX-L-33.
14) What is the difference between the MRX-L-33 and a mortise deadbolt like the Sargent 4874?
The Sargent 4874 is a double cylinder mortise deadbolt with a 2-3/4 inch backset and no latch or lever - it bolts the door only. The TownSteel MRX-L-33 is a complete lever mortise lockset with double cylinder keyed function and ligature-resistant stainless steel lever trim, on a 1-1/4 by 8 inch stainless steel face plate and a 1-1/4 by 4-7/8 inch ASA strike. Choose the deadbolt when a separate operating trim already handles the door.
15) Can I order the MRX-L-33 with small format interchangeable core, or do I need a different brand for SFIC?
No other brand is needed - the MRX-L-33 is built in an SFIC prep, less core configuration in 630 satin stainless steel with either escutcheon or sectional trim, alongside the standard cylinder build. Among mortise peers, the Cal-Royal NM8080 Grade 1 storeroom lockset is the one listed with an interchangeable core option, but it does not carry ligature-resistant lever trim.
16) What finish does the anti-ligature MRX-L mortise lockset come in?
630 satin stainless steel, across every trim and cylinder combination. That's the standard institutional finish, so it matches satin stainless push plates, hinges and pulls already on most healthcare openings.
17) Is the TownSteel MRX-L-33 an electronic or access control lock?
No, it's purely mechanical, key operated. If the project needs credential or keypad access on a mortise prep, that's a different family of product, such as the BEST 45HZ EZ keypad mortise lock or the Schlage CO-100 standalone electronic mortise lock. Neither of those is ligature resistant, so on an at-risk patient room the mechanical MRX-L is the one that meets the trim requirement.
How fast can I get the TownSteel MRX-S-L-33-630 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 TownSteel MRX-S-L-33-630 come with a warranty?
Absolutely. The TownSteel MRX-S-L-33-630 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 TownSteel MRX-S-L-33-630?
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 TownSteel MRX-S-L-33-630 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.
!