Page 3
FM1
F
AST
M
OUNT
33-4210 05/06
5.
Remove any glass fi ber insulation behind the ceiling around
opening so the Support Bridge lays fl at against the back
side of the ceiling surface.
6. Fold the Support Bridge so it can be inserted through the
opening (see
Figure 4
).
7. Move any wiring or conduit aside and insert the Support
Bridge through the opening.
8.
Unfold the Support Bridge back to its original position and
place into the speaker cutout. The four Locating Tabs at the
inside edges of the support bridge will aid in centering the
assembly (see
Figure 5
).
C AU T I O N : I M P R O P E R U S E , I N S TA L L AT I O N O R
ACCIDENTAL RELEASE OF THE SPRINGS MAY CAUSE
INJURY. ALWAYS WEAR SAFETY GLASSES AND KEEP
FINGERS AWAY FROM THE SPRING ASSEMBLIES.
NCB-FM1 BRACKET INSTALLATION IN NEW
CONSTRUCTION
The NCB-FM1 New Construction Bracket (
Figure 6
) is used to
pre-install the mounting hardware before the gypsum board ceil-
ing is installed. The bracket wings have holes at 12”, 16”, 19.20”
and 24” center to center to allow mounting into most standard
joist spacing, including APA spans for performance rated I-Joists
(PRI). The circular opening at the center can be used as an
edge guide for a rotary cutting tool.
1
Engage the loose end of the springs into the “install” tabs
(see
Figure 7
).
2
Attach the bracket to the ceiling joist structure using #4d
nails or screws.
CAUTION: IMPROPER USE, INSTALLATION OR ACCIDEN-
TAL RELEASE OF THE SPRINGS MAY CAUSE INJURY.
ALWAYS WEAR SAFETY GLASSES AND KEEP FINGERS
AWAY FROM THE SPRING ASSEMBLIES.
TBS-FM1
Support
Bridge
Locating Tabs
Figure 4:
Inserting the TBS-FM1 into the Ceiling Opening
Figure 5: TBS-FM1 Locating Tabs
Figure 6: NCB-FM1 New Construction Bracket
Install Tab
(with Spring Engaged)
Figure 7: Engaging the Springs in the Install Tabs
