Von Duprin 5575NL 643E LHR Narrow MTS Crossbar Exit 643E

Von Duprin 5575NL 643E LHR Narrow MTS Crossbar Exit 643E is a Grade 1 Mortise Exit Bar designed for durability and reliability in various commercial applications. This narrow stile crossbar device features a 48" length and operates with a night latch function, ensuring secure access control while still allowing for quick egress in emergencies. The aged bronze finish adds a touch of elegance, making it ideal for retro-inspired architecture and historical buildings. Engineered for versatility, the 55 Series accommodates all types of single and double doors with mullions, fitting door stiles as narrow as 1 3/4". The concealed vertical rod exit device includes a dummy trim and comes with hex key dogging, offering ease of operation and maintenance. With a latch bolt throw of 3/4" and a crossbar projection of 3 3/4" when neutral, this exit device meets the demanding requirements of high-traffic commercial environments. Installation is straightforward, with fasteners included for doors ranging from 1 3/4" to 2 1/4" thick. The product is UL listed for accident hazard installations. Trust the Von Duprin 5575NL for a reliable, stylish, and functional exit solution that enhances safety while maintaining aesthetic appeal.

Narrow MTS Crossbar Exit 643E

Grade 1 Mortise Exit Bar, Narrow Stile Crossbar, 48" Device, Night Latch Function, Pull Trim, Less Cylinder, Hex Key Dogging, Aged Bronze Finish, Left Hand Reverse

The 55 Series from Von Duprin are exit device crossbars with a classic design. The 55 Series is a narrow stile device and commonly used in retro-inspired architecture and historical buildings.

Concealed Vertical Rod Exit Device, Dummy Trim.

55 Series devices for all types of single and double doors with mullion, UL listed for accident hazard installations. Fits doors stiles as narrow as 1 3/4" (44 mm). 

• Device functions Device ships EO/DT/NL/L
• Crossbar length 42" (1067 mm)
• Crossbar height to finished floor 36 13/16" (935 mm) at center
• Lock stile case 7 1 /4" x 1 3 /16" x 2 1 /4" (184 mm x 30 mm x 57 mm)
• Hinge stile case 7 1 /4" x 1 3 /16" x 2 1 /4" (184 mm x 30 mm x 57 mm)
• Crossbar tubing 1" (25 mm)
• Projection Crossbar neutral – 3 3/4" (95 mm) Crossbar depressed – 2 3/8" (60 mm)
• Latch bolt 3/4" (19 mm), throw
• Fasteners and Sex bolts (SBN) Includes screw pack for 1 3/4" (44 mm) and 2 1/4" (57 mm) thick metal or wood doors. Sex nuts and bolts included.

Resources

• 55 Series Exit Device Service Manual
• 55 Series Narrow Style Crossbar Devices Cut Sheet
• 5547WDC & 5547WDC-F Series Wood Door Template
• 5575 & 5575-F Mortise Lock Wood Door Template
• Von Duprin Finishes Chart