Classroom Security Function Lock, Key In Either Lever Locks Or Unlocks Outside Lever. Inside Lever Always Unlocked For Immediate Egress Recommended For Use On All Commercial, Educational And Institutional Applications Where Normal To Heavy Traffic Is Anticipated Cylindrical Design – No Exposed Parts Unconditional Warranty Heavy-Duty Lock Chassis Lever Style: Rhodes Door Thickness: 1-5/8” – 2” Backset: 2-3/4” Standard Latch: 1-1/8” X 2-1/4”, Square Corner Faceplate, 1” Housing Diameter, 1/2” Throw Cylinder: 6 Pin Solid Brass Keyed 5 Keyways: Sc1 Keyway Keying: Kd Certification: Ansi: A156. 2, 1996, Series 4000, Grade 1, U. L. Listed For 3 Hour Fire Rated Door Strike: 1-1/4” X 4-7/8”, Ansi, Square Corner, No Box Keys: 2 Nickel Silver Cut Keys Per Lock, 5 Pin, C Section Latch: 1/2” Throw Hand: Reversible Packed: 6 Per Case Hand: Reversible Finishes: 626 (Satin Chrome) Made in: United States Dimensions: 1. 667 X 2. 75 X 2. 417Brand: Schlage Item Weight: 5. 6includes: Unit , Instruction Guide