Von Duprin 388NL Installation Instructions Download Page 1

*941093-00*

941093-00

CONTROL AND MOUNTING

STUD POSITIONS

TO INSTALL CYLINDER

Rim

cylinder

Cylinder

bracket

Cylinder screws

(cut to  length)

Rim

cylinder

Cylinder

bracket

Cylinder screws

(cut to  length)

UP

UP

RHR

Out

side

Lock

stile

LHR

Outsid

e

Lock

stile

Note

stud

positions

Note

stud

positions

RHR

Out

side

Lock

stile

LHR

Outsid

e

Lock

stile

Prepare door for exit device. 

See exit device instructions for locations of  holes, backset 

(line X-X) and center lines.

Prepare door for control:

2a  Transfer line X-X from inside (exit device) side of door 

to outside (control side) of door. Use extra care if edge 

of door is beveled. Be sure line X-X is parallel  to edge 

of door.

2b  Locate and prepare holes as shown on other side.

Prepare control:

3a  Orient control as shown for your application (RHR or 

LHR) and make sure mounting studs are in  positions 

shown. If not, move mounting studs to correct 

positions.

3b  Install cylinder.

3c  If necessary, adjust tailpiece length.

Apply exit device and control.

To Adjust Tailpiece Length

Cut cylinder tailpiece as shown.

1/8”

Inside face

of door

Cylinder

tailpiece

Cylinder Control

388NL

Installation Instructions

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