- Passage Function : Our commercial lever door knobs with locks are designed for specific entrances where easy access is required. The "Passage Function" allows for unlocking from either side, making it ideal for spaces like conference rooms or offices where frequent entry and exit are essential. - Color & Sizing : Available in a sleek Satin Chrome finish (26D), these door locks fit doors with a thickness of 1-3/8" to 1-3/4" (35mm to 44mm) and come standard with a 2-3/4" (70mm) backset. The non-handed design ensures compatibility with both right- and left-handed doors. - Specifications : Our door hardware meets industry standards with ANSI 1-1/10" x 2-1/4" square corner strikes and 1-7/10" x 2-3/4" square corner faceplates. The backset measures 2-3/4" (70mm), featuring stainless steel roses with a diameter of 3-11/32" (85mm) and a standard latchbolt throw of 1/2" (12.5mm). This makes our door lever handle lock suitable for 161 door prep and regular 2-1/8" bore prep. - Certification : Built for durability, our heavy-duty entry key locks are ANSI/BHMA A156.2 - Grade 2 certified, exceeding 500,000 cycles, and UL listed. Each lever is designed to meet A117.10 accessible standards and is fire rated for up to 3 hours, ensuring safety and reliability for various environments. - Applications : Perfect for home and business owners, apartment managers, contractors, maintenance facility managers, handymen, locksmiths, and property managers, our commercial door locks provide secure access solutions for offices, storage rooms, or communal areas. With our commercial lever door knobs, you gain peace of mind and reliable access control, all while enhancing the aesthetic of your space.