• 5547NL Von Duprin Concealed Vertical Rod Exit Device - Night Latch

*Actual product and finish may vary

The 5547NL is a night latch (Key Retracts Latch Bolt) concealed vertical rod exit device for all types of single and double doors with mullion, UL listed for accident hazard installations.

All 55 series exit devices are UL listed for Accident Hazard or Fire Exit Hardware, and are tested in accordance to ANSI A156.3, 1994, Grade I.

Specify handing.

555NL standard trim


Von Duprin 55 series catalog


Features and Benefits

  • Field sizeable
  • Five popular finishes
  • 1/2" (13mm) (MD) or 5/8" (16mm) WD throw latch bolt
  • Hex key dogging

Dimensions

  • Crossbar height to finished floor 36 13/16" (935mm) at center
  • Crossbar projection — neutral 3 3/4" (95mm)
    depressed 2 3/8" (60mm)
  • Crossbar length 42" (1067mm)
  • Lock stile case 7 1/4" x 1 3/16" x 2 1/4" (184mm x 30mm x 57mm)
  • Hinge stile case 7 1/4" x 1 3/16" x 2 1/4" (184mm x 30mm x 57mm)
  • Vertical rods-hexagon 3/8" (10mm) adjustable top rod
  • Crossbar tubing 1" (25mm)
    Note: Maximum door undercut, 1/4" (6mm).

Options

Standard Trim

Series 550
Heavy aluminum bracket with 10" (25mm) stainless steel or brass pull bar. 550DT with NL function is furnished with 110MD or WD. On 555NL (Metal) and 556NL (Wood), the cylinder locates in pull return. Cylinder must be ordered separately.

Series 550
Heavy aluminum brackets with 10" (25mm) stainless steel or brass pull bar. DT function only.

Series 376T
Thumbturn control has a forged brass 7/8" (25mm) thick escutcheon. Often used with DT trim or pull. An NL cylinder plate is included for thumbturn operation only when key is used for vertical rod or mortise device. BE blank escutcheon is available, specify 376T-BE.

Series 370L
Lever control has a forged brass 7/8" (25mm) thick escutcheon. Optional lever designs are available. An NL cylinder plate is included for lever operation only when key is used for vertical rod or mortise device. BE Blank escutcheon is available, specify 371L-BE.

Lever Design Options

  • 01
  • 02
  • 03
  • 06 Standard
  • 07
  • 12
  • 17

Operation Options

  • Standard Operation — Key locks and unlocks lever.
  • NL Function — Lever is locked when key is removed.
  • Blank Escutcheon — Lever always active. BE suffix, e.g., 371L-BE.

Accessories

Strikes and Fasteners
Device is furnished with standard 1409 strike in dull black finish. Sex nuts and bolts for mounting are included for 1-3/4" (44mm) and 2-1/4" (57mm) thick doors.

Cylinders
Cylinders are not furnished with device or trim and must be specified when ordering. Rim and concealed vertical rod exit devices use rim type cylinders. Mortise lock exit devices and series 370 controls use mortise type cylinders.

Conversion Kit — NL
For converting 55DT or 55EO to 55NL for night latch function. The kit includes 110NL cylinder assembly and cam. The 550DT trim and 3216 rim cylinder are not included.

5547NL Von Duprin Concealed Vertical Rod Exit Device - Night Latch

  • $2,353.00


Available Options