Delaney RH Series - SD Style Keyed Classroom Door Leverset Product Technologies: Classroom Function: Deadlocking latch bolt operated by key in outside lever or reotating inside lever. Outside lever locked or unlocked by key. Inside lever is always unlocked. Features: Concealed Mounting Screws Protective Sleeve Interlocking Screw Posts Push Button Locking GR2 Regency Lever- Turn Locking Panic Proof Specifications: Backset: Adjustable 2-3/8 and 2-3/4 Door Thickness: 1-3/8 ~ 2Cylinder: SC4 6-pin standard. KW1 5-pin optional Entries packed KA2, SC1 5-pin optionalStrikes: 1-1/8 x 2-3/4 T-strike (9101)Door Handing: Not required Door Prep: Cross bore: 2-1/8 Edge bore: 1 Latch face: 1 x 2-1/4 Latches: Entrance: 2-3/8 & 2-3/4 adjustable (9060 UL) Passage/Privacy: 2-3/8 & 2-3/4 adjustable (9064 Faceplate: 1 x 2-1/4 round corner Bolt: 1/2 throw. Meets 3-Hr Fire Rating ANSI & Federal Standards: Meets requirements of BHMA/ANSI A156.2 Series 4000, GR2, 400,000 Cycles.