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Installation
Exterior Factory-Built Chimney
Class ‘A’ wall penetration. If the chimney is to pass through the lower wall, a NFPA 211 wall
building authority.
WALL PENETRATION UNDER 74"
In cases where the chimney connector must be passed through a combustible wall or partition under
74", the following NFPA 211 method may be used if local building code permits. Check with local
authorities before installation to ensure all necessary requirements have been met. See Figure 10
chimney may be used in accordance with the chimney installation instructions.
WALL PENETRATION 74" OR GREATER
Brick
Fire Clay Thimble
Combustible Materials
Refer NFPA 211 for
full details on
Wall Pass-Through
Minimum
12" (305mm)
Refer to the Chimney
manufacturer's instructions
and clearances for wall
penetrations. A wall radiation
shield (thimble) is required
UL 103 HT
Chimney System
Refer Clearances to
Combustible Materials
section for all Stove
Clearances
Chimney
Connector
Sections
Minimum 74” (1.88 m)
Figure 10
Figure 11
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