Von Duprin 9857NL-F 4 643E Grade 1 643E 3-Point Exit Device

Von Duprin 9857NL-F 4 643E Grade 1 3Pt Exit Device 643E delivers robust security and reliable performance for commercial settings. This Grade 1 three-point exit bar is designed for doors up to 84 inches in height and features a night latch function, ensuring safe and efficient egress in emergency situations. The device is crafted for both single and double doors and is UL listed for panic exit hardware, providing peace of mind for building professionals and occupants alike. Constructed with a durable aged bronze finish, the 9857NL-F can accommodate standard hollow metal doors with 86 or 161 cutouts. Its three-point latching mechanism enhances security, while the smooth mechanism case ensures easy operation. The device is field reversible, adding to its versatility across various installations. With dimensions that include a center case measuring 8" x 2 ¾" and a projection of 3 13/16" when neutral, the 9857NL-F is designed to fit seamlessly into your commercial space. The latch bolt features a deadlocking anti-friction design, ensuring reliable performance over time. Ideal for high-traffic areas, this exit device combines functionality with an elegant aesthetic, making it an essential choice for modern commercial applications.

Grade 1 3Pt Exit Device 643E

Grade 1 Three-Point Exit Bar, 48" Fire-rated Device, 84" Door Height, Night Latch Function, Escutcheon Pull, Less Dogging, Aged Bronze Finish, Field Reversible

9857/9957 Three-point latching device for all types of single or double doors, UL listed for panic exit hardware. Covers stock hollow metal doors with 86 or 161 cutouts. Vertical rod and latch guards are available to protect the bottom rod of the exit device from damage by impacts of carts or gurneys passing through doors.

The 9857 device has a smooth mechanism case.

Three-point latching device for all types of single or double doors, UL listed for panic exit hardware. Devices are ANSI A156.3 – 2008 Grade 1. Covers stock hollow metal doors with 86 or 161 cutouts.

• Device functions: Device ships EO/DT/NL. Field selectable. For TP, K or L remove NL drive screw from device.
• Device lengths: 3' 2'4' to 3' (711mm to 914 mm) Door size 4' 2'10" to 4' (864 mm to 1219 mm) Door size
• Device centerline from finished floor: 3913/16" (1011 mm) Center case dimensions 8" x 2 3/4" x2 3/8" (203mm x 70mm x 60mm)
• Mechanism case dimensions: 2 1/4" x 2 1/4" (57mm x 57mm)
• Projection: Pushbar neutral – 3 13/16" (97 mm) Pushbar depressed – 3 1/16" (78 mm)
• Latch bolt: Deadlocking anti-friction top & bottom bolt, 5 /8" (16mm) throw Deadlocking rim bolt, 3 /4" (19mm) throw
• Door undercut: 1 /4" (7mm) recommended
• Top & bottom Latch case: 4 1/2" x 2 1/8" x 1 1/2" (114mm x 54mm x 38mm)
• Vertical rods: 1 /2" square tubing, standard rods accommodate 7' (2134mm) doors. Top rod length: 34 15/16" (887mm); Bottom rod length: 31 1/2" (794mm) Extension rods available in 1' (205mm) or 3' (914mm) for doors over 7'. One piece top rod is available for 8' (2438mm) and 10' (3048mm) doors.
• Fasteners & sex bolts (SNB): Includes screw pack for 1 3/4" (44mm) to 2 1/4" (57mm) thick metal or wood doors, and 325 SNB for top and bottom latch. Optional 425 SNB available

Resources

• 9857 3-Point Locking Exit Device Cut Sheet
• QEL 98/99 Baseplate Conversion Series Installation Instructions
• QEL Conversion Kit for 98/99 Series Installation Instructions
• QEL Data Sheet
• QEL Sell Sheet
• Quiet Electric Latch FAQ
• Von Duprin 33/35 and 98/99 ALK Alarm Kit Installation Instructions
• Von Duprin 33/35 and 98/99 End Cap Retrofit Kit Installation Instructions
• Von Duprin Exit Alarm Kit Sell Sheet
• Von Duprin Finishes Chart
• Von Duprin LD Cover Plate for 33/35 & 98/99 Exit Devices Installation Instruction
• Von Duprin Pneumatic Exit Device Installation Instructions