21
• 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 hole through
the wall.
Figure 14. Hole and Vent Pipe
2. Position the firestops.
3. Place the heat shield
to the top.
4. Continue the vent run.
Figure 15. Heat Shield, Interior & 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.
TRIM HEAT
SHIELD IF TOO
LONG, ADD TO
SHIELD IF TOO
SHORT
EXTERIOR
FIRESTOP
INTERIOR
FIRESTOP
HEAT SHIELD
VENT PIPE
1" (25.4 mm)
12"
(305mm)
12"
(305mm)
NOTE: There must be NO INSULATION or other
combustibles inside the framed firestop opening.