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15
Position the firestops on both sides of the hole
previously cut and secure the firestops with nails or
screws.
The heat shields of the firestops MUST BE placed
towards the top of the hole.
Continue the vent run through the firestops.
1. Cut the 12-inch by
12-inch hole.
Figure 13. 12" x 12" Hole and Vent Pipe
2. Position the firestops.
3. Place the heat shield
to the top.
4. Continue the vent run.
Figure 14. Heat Shield, Interior and Exterior
Firestops
For Vertical Runs - One ceiling firestop is
REQUIRED at the hole in each ceiling through which
the vent passes.
To install firestops for vertical runs that pass through
ceilings:
Position a plumb bob directly over the center of the
vertical vent component.
Mark the ceiling to establish the centerpoint of the
vent.
VENT PIPE
1" (25.4 mm)
12"
(305 mm)
12"
(305 mm)
12"
(305 mm)
12"
(305 mm)
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT.
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT.
EXTERIOR
FIRESTOP
EXTERIOR
FIRESTOP
INTERIOR
FIRESTOP
INTERIOR
FIRESTOP
HEAT SHIELD