Delaney E Series – MD 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: Independent Torsion Spring Removable Through Bolts Concealed Mounting Screws Anti-Friction Latch Retractor Clutch Function Panic Proof – Push/Turn Panic Proof – Push/Turn Specifications: Backset: 2-3/4 UL Latch standard, 2-3/8 optionalDoor Thickness: 1-3/8 ~ 2. Adjustable mounting plateCylinder: SC4 6-pin standard, KW1 5-pin optional, SC1 5-pin optionalStrikes: 4-7/8 ANSI Strike standard (9109) Door Prep: Cross bore: 2-1/8 Edge bore: 1 Latch face: 2-3/4: 1-1/8 x 2-1/4, 2-3/8: 1 x 2-1/4 Dummies are surface mounted Latches: Entrance: 2-3/4 (E9070T) standard. 2-3/8 (E9060T) optional Pass/Priv: 2-3/4 (E9073T) standard. 2-3/8 (E9063T) optional Faceplate: 2-3/4: 1-1/8 x 2-1/4. 2-3/8: 1 x 2-1/4 Sq. Corner Bolt: 1/2 Stainless Steel throw. Meets 3-Hr. Fire Rating ANSI & Federal Standards: Meets & exceeds requirements of BHMA/ANSI A156.2 Series 4000, GR2, 400,000 Cycles. Meets FF-H-106C Federal Standard.