{"product_id":"marks-usa-5ss55n-institutional-anti-ligature-passage-mortise-lockset-with-solid-stainless-steel-trim-keyless","title":"Marks USA 5SS55N Institutional Anti-Ligature Passage Mortise Lockset with Solid Stainless Steel Trim, Keyless","description":"\u003cp\u003e\u003cstrong\u003ePart Number: 5SS55N\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003e\u003cstrong\u003eMarks USA 5SS55N Institutional Anti-Ligature Passage Mortise Lockset with Solid Stainless Steel Trim, Keyless\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Marks USA 5SS55N is a heavy-duty institutional anti-ligature passage mortise lockset engineered for demanding commercial environments where safety and durability are paramount. Designed for keyless passage function (ANSI Function F75), the latch is retracted by knobs or levers at all times, making it ideal for high-traffic corridors, healthcare facilities, and institutional settings. Built to a 1-3\/4\" standard door thickness with a 2-3\/4\" backset, this lockset meets or exceeds all operational and security tests of ANSI A156.13-2005 for Series 5000, Grade 1, and is rated for a minimum of 1,500,000 life cycles. Solid stainless steel construction throughout ensures long-term performance in the most rigorous applications.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Durability:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLife tested to a minimum of 1,500,000 cycles, ensuring long-term reliability in high-traffic institutional and commercial applications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnti-Ligature Safety Design:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSolid stainless steel interior and exterior tapered knobs or levers recessed into thru-bolted roses, featuring safety knobs with recessed grip and finger indents (Patent #D587556) to minimize ligature risk.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Stainless Steel Construction:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSolid cast stainless steel levers, solid stainless steel cylinders with solid stainless steel security collars, and a solid stainless steel latch with antifriction latch lever for superior corrosion resistance and durability.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Lock Specifications:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e2-3\/4\" backset; adjustable bevel steel backplate measuring 1-1\/4\" x 8\" x 7\/64\" thick; 3\/4\" reversible latch throw; 1\/2\" reversible auxiliary deadlatch throw; cover plate 1\/16\" thick with tamper-proof screws.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTamper-Resistant Strike:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eIncludes a 4-7\/8\" curved lip stainless steel strike secured with tamper-proof screws for added security and resistance to forced entry.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA-Compliant Lever Operation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eSafety lever for handicapped access on clutch-operated mortise lock; levers rotate up and down freely in both locked and unlocked positions for accessible, ergonomic operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Internal Components:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eStamped steel case 3\/32\" thick with zinc dichromate finish; steel hubs (9\/32\" on diamond, 5\/16\" on square) with security separator; steel hub lock arm 1\/8\" thick; independent spring-loaded spindles for reliable, consistent operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Door Preparation:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eANSI A115.1 lock face cutout with 2-1\/8\" through hole for knob\/rose assembly; front size 1-1\/8\" x 2-1\/4\" for straightforward installation on standard commercial doors.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eCertifications \u0026amp; Compliance\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eANSI\/BHMA A156.13-2005 Series 5000, Grade 1 — Meets or exceeds all operational and security tests\u003c\/li\u003e\n\u003cli\u003eANSI\/BHMA Certified\u003c\/li\u003e\n\u003cli\u003eUL Listed\u003c\/li\u003e\n\u003cli\u003eADA Compliant\u003c\/li\u003e\n\u003cli\u003eANSI Function F75 (Passage\/Hall\/Closet — Latch retracted by knobs\/levers at all times)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e5SS19 Series\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatch Throw:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e9\/16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Group:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMechanical Locks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Subgroup:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBored Locksets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCylindrical Locks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubcategory:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCylindrical Locks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI\/BHMA:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eANSI\/BHMA, UL Listed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial\/Residential:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCommercial\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLock Type:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCylindrical\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFunction Description:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eLatch retracted by knobs\/levers at all times\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFront Size:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e1-1\/8\" x 2-1\/4\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eADA Compliant:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eKeyed:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eNo\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eANSI Function:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eF75\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Attribute:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCylindrical Locks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Function:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003ePassage\/Hall\/Closet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLatch Type Specification:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDeadlocking\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Category:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eMechanical Locks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDepartment:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eDoor Hardware\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHealthcare and Behavioral Health Facilities\u003c\/li\u003e\n\u003cli\u003eInstitutional and Correctional Environments\u003c\/li\u003e\n\u003cli\u003eEducational Facilities and Schools\u003c\/li\u003e\n\u003cli\u003eCommercial Office Buildings\u003c\/li\u003e\n\u003cli\u003eGovernment and Municipal Buildings\u003c\/li\u003e\n\u003cli\u003eMulti-Tenant Residential and Assisted Living Properties\u003c\/li\u003e\n\u003cli\u003eHigh-Traffic Corridors and Common Areas\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eWhy Marks USA 5SS55N?\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eMarks USA 5SS55N mortise locksets are built to the highest institutional standards, combining solid stainless steel construction throughout with a life test rating of 1,500,000 cycles minimum and full compliance with ANSI A156.13-2005 Grade 1 requirements. The anti-ligature design — featuring patented recessed safety knobs (Patent #D587556), thru-bolted roses, and tamper-proof hardware — makes this lockset the trusted choice for professionals specifying door hardware in safety-critical commercial and institutional environments.\u003c\/p\u003e","brand":"Marks USA","offers":[{"title":"Satin Stainless Steel","offer_id":48282870677725,"sku":"5SS55N-32D","price":731.89,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0292\/0123\/6108\/files\/2255320_source_1784814021.jpg?v=1785429079","url":"https:\/\/goldenlocksinc.com\/products\/marks-usa-5ss55n-institutional-anti-ligature-passage-mortise-lockset-with-solid-stainless-steel-trim-keyless","provider":"Golden Locks Inc","version":"1.0","type":"link"}