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Heat & Glo • Soho24B • 2137-900 Rev. P • 8/12
C. Vertical Penetration Framing
Figure 6.3
Figure 6.4 Installing the Attic Shield
A ceiling fi restop MUST be used between
fl oors and attics.
• Frame opening 9 in. x 9 in. (229 mm x 229
mm) whenever the vent penetrates a ceiling/
fl oor (see Figure 6.3).
• Frame the area with the same sized lumber
as used in ceiling/fl oor joist.
• The ceiling fi restop may be installed above or
below the ceiling joists when installed with a
attic insulation shield. It must be under joists
between fl oors that are not insulated. Refer
to Figure 6.4.
• Secure with three fasteners on each side.
WARNING! Risk of Fire! DO NOT pack
insulation around the vent. Insulation must be
kept back from the pipe to prevent overheating.
ATTIC ABOVE
A
PIPE
SLP
A
9 in. (229 mm)
A
3 FASTENERS
PER SIDE
INSTALL ATTIC INSULATION SHIELDS
BEFORE OR AFTER INSTALLATION OF VENT SYSTEM
CEILING FIRESTOP
INSTALLED BELOW CEILING
CEILING FIRESTOP
INSTALLED ABOVE CEILING