General Information & Features ? Lock Chassis: Extra heavy duty independent springs to prevent lever sag. Lever rotate in one direction to a positive stop. ? Certification and Compliance: ANSI/BHMA A156.2, Series 4000 Grade 1. UL approved for? label and lesser doors. ANSI A117.1 Accessibility Code. Federal Specification FF-H-106C. ? Handing: Non-handed levers operate bi-directionally. Mounting: Thru bolting to prevent chassis rotation. Door thickness: 1-3/4 (44.45 mm) to 2 (50.80 mm). Backset: 2-3/4 (69.85 mm) standard; 3-3/4 (95.3 mm), 5″ (127.00 mm) available Finishes: ?3, 4, 10, 10B, 26, 26D, 605, 606, 612, 613, 625, 626