Federal Signal Global Serie Instructions D'installation page 10

Installation and Maintenance Instructions
Figure 4 Side view of trunnion-mount loudspeaker
Mounting the Surface-Mount Ex d Loudspeaker
Mount the loudspeaker to a flat surface using the four 8.5 mm
mounting holes. Use installer-supplied fasteners suitable for the
surface to which the device will be mounted.
105.9 mm
(4.17 in
10
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Figure 5 Front view of Ex d loudspeaker
105.9 mm
(4.17 in
Model G-SPK Global Series Loudspeaker
190.6 mm
(7.50 in)
Ø133.8 mm (5.27 in)
)
4X COUNTER-BORED
HOLES TO FIT M8
SOCKET-HEAD
CAP SCREWS