Lenel OnGuard Hardware Installation Manual page 31

For smaller modules, only four of the mounting holes are used, the last two holes need support standoffs
which come installed from the factory. The exception is the single reader interface module — up to eight (8)
units can be mounted in any standard 2-gang or 3-gang junction enclosure.
The standoffs for the hardware come in a separate package. The diagram below illustrates positioning.
1.0"
INSERT
STANDOFFS
HERE
DO NOT DISPOSE
[QTY 2]
LNL-CTX knockout diagram
0.8125 5.1875"
0.375" Clearance Hole
0.1875" Slots nominal
Backbox Mounting Hole Configuration
3/4" and 1" Knock Outs
1.50"
Hardware Installation Guide
4.8125"
0.875"
0.125"
3/4" and 1" Knock Outs
31
revision 7 —