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

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.