The 9947 Series by Von Duprin is UL listed for panic exit hardware. Devices are ANSI A156.3 - 2008 Grade 1 with a grooved case.Device functions: Device ships EO/DT/NL. Field selectable. For TP, K or L remove NL drive screw from device.Device lengths:2' ? 2' (610 mm) Door size3' ? 2' 4' to 3' (711 mm to 914 mm) door size4' ? 2' 10" to 4' (864 mm to 1219 mm) door sizeDevice centerline from finished floor:39-5/8" (1006 mm) StandardAdjustable from 35-5/8" (905 mm) to 49-5/8" (1260 mm)Center case dimensions: 8" x 2-3/4" x 2-3/8" (203 mm x 70 mm x 60 mm)Mechanism case dimensions: 2-1/4" x 2-1/4" (57 mm x 57 mm)Projection:Pushbar neutral ? 3-13/16" (97 mm)Pushbar depressed ? 3-1/16" (78 mm)Latch bolt: Deadlocking top & bottom bolt, 5/8" (16 mm) throwDoor undercut: 1/4" (7 mm) recommendedTop & bottom Latch case: 4-1/2" x 2-1/8" x 1-1/2" (114 mm x 54 mm x 38 mm)Vertical rods:Round 2-piece adjustable rodsTop rod adjustable from 6' 8" (2027 mm) to 8'4" (2533 mm).Bottom rod adjustable 35-5/8" (905 mm) to 49-5/8" (1260 mm).Extension rod kits available for doors over 8' 4" (2533 mm).Fasteners & sex bolts (SNB): Includes screw pack for 1-3/4" (44 mm) to 2-1/4" (57 mm) thick metal doors. Optional 425 SNB available.