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Heat & Glo • CFX-CRESCENT • 705-900 Rev. P • 12/07
21
Figure 14 . 9”x 9” Hole & New Framing Members
If the area above the ceiling is NOT an attic, posi-
tion and secure the ceiling firestop on the ceiling
side of the previously cut and framed hole.
This shows a ceiling
installation.
Figure 15. Ceiling Firestop (Ceiling Side)
• Drill a hole or drive a nail through this centerpoint.
• Check the floor above for any obstructions, such
as wiring or plumbing runs.
• Reposition the fireplace and vent system, if
necessary, to accommodate the ceiling joists
and/or obstructions.
• Cut a 9-inch x 9-inch (229mm x 229mm) hole
through the ceiling, using the centerpoint previ-
ously marked.
• Frame the hole with framing lumber the same
size as the ceiling joists.
1. Cut the 9-inch by
9-inch hole.
2. Add the new framing
members.
JOIST
CEILING FIRESTOP
CEILING
NAILS (4 REQUIRED)
CEILING
NEW
FRAMING
MEMBERS
EXISTING CEILING
JOISTS
CHIMNEY
HOLE
9" (229 mm)
9" (229 mm)