Marks Life Safety 5SS55 Anti-Lig Institution Mort Lock Knob

SKU # MK/5SS55GL-32D

"Grade 1 Anti-Ligature Life Safety Lock Series"

Product Features:

  • Function: Institutional Privacy (GL).
  • Finish: Satin Stainless Steel (32D).
  • Note: Sold with Marks "C" keyway, Keyed Different (KD), see additional "Keying Options" below.
  • Delivery: The Marks 5SS55GL LifeSaver Anti-Ligature Mortise Institutional Privacy Knob is factory-ordered, please allow 8-10 working days' lead time.



Marks USA has developed LifeSaver™ ANSI Grade 1 institutional life safety locksets to address managed liability, accident prevention, life safety and security in Behavioral Health Care Institutions, X-ray settings and correctional facilities. LifeSaver offers the most variations; unprecedented cylindrical, mortise sytles, models & functions available, including electrified units, ideal for buzz-in and man-trap applications, plus antimicrobial finishes. With easy installation, they retrofit all popular preps and door constructions. All LifeSaver series locks are stainless steel and come with the Marks USA LIfetime Mechanical Warranty.

LifeSaver series provide the following security and lockset solutions.

  • Anti-Ligature Models - Ergonomic shape and construction prevents sentinel events; restricts the attachement of lines, laces, etc.
  • Saves Budgets - Typically 40% less cost than competitive products, while exceeding durability standards by as much as 400%.
  • Unprecedented cylinderical, mortise styles, models & functions available, including electrified units, ideal for Buzz-in and man-trap applications, plus antimicrobial finishes.
  • Easy installation and retrofit All popular preps and door constructions.
  • Facility-Friendly & Longest Life: ANSI 156.2 Grade 1; UL 3-Hour Fire Rated.
  • Marks Lifetime Mechanical Warranty.

Function: The Marks 5SS55-Series Knobs are available in Institutional Privacy (GL) function.

Finish: The Marks 5SS55-Series Knobs come in Satin Stainless Steel (US32D) finish.

Life Test: 1,500,000 cycles minimum.

ANSI Test: Meets or exceeds all operational and security tests of ANSI specifications A156.13-2005 for series 5000, Grade 1.

Exterior & Interior Trim:

  • Solid stainless steel interior and exterior tapered knobs or levers recessed into thru-bolted roses.
  • Safety knobs with recessed grip and finger indents (Patent #D587556).
  • Ergonomically designed grooved turn knob for deadbolt functions.

Cylinder: Solid stainless steel cylinders with solid stainless steel security collars.

Strike: 4-7/8" curved lip stainless steel w/tamperproof screws.

Door Thickness: 1-3/4" standard.

Door Prep: ANSI A115.1 lock face cutout, with 2-1/8" through hole for knob/rose assembly.

Backset: Standard 2-3/4" Backset.

Lock Front: Adjustable bevel steel backplate 1-1/4" x 8" x 7/64" thick, Cover plate 1/16" thick with tamper proof screws.

Latch: Solid stainless steel with antifriction latch lever, 3/4" throw (reversible).

Levers: Solid cast stainless steel. Levers Rotate up & down freely in locked or unlocked position.

Aux. Deadlatch: 1/2" throw (reversible).

Case: Stamped steel 3/32" thick, zinc dichromate finish.

Hubs: Steel, 9/32" on diamond, 5/16" on square w/security separator.

Hub Lock Arm: (to lock hub) Steel 1/8" thick.

Spindles: Independent spring-loaded spindles.



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