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CAC 7
SHEET STEEL SUPPORTS
CHIMNEY SECTION
CHIMNEY
CONNECTOR
AIR SPACE
2 IN.
TWO VENTILATED AIR
CHANNELS EACH 1 INCH.
CONSTRUCTED OF
SHEET STEEL.
PART C
FIGURE 5
PART D
FIGURE 5
MINIMUM CLEARANCE
2 IN. ALL AROUND
CHIMNEY THIMBLE
1 IN. AIR SPACE TO
CHIMNEY LENGTH
MASONRY CHIMNEY CONSTRUCTED
TO NFPA 211
SHEET STEEL SUPPORTS
(24 GAUGE MIN. THICKNESS)
CHIMNEY FLUE
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.
MASONRY CHIMNEY CONSTRUCTED
TO NFPA 211
SHEET STEEL SUPPORTS
(24 GAUGE MIN. THICKNESS)
CHIMNEY CONNECTOR
TO HEATER
MINIMUM CHIMNEY CLEARANCES FROM MASONRY TO
SHEET STEEL SUPPORTS AND COMBUSTIBLES 2 IN.
MINIMUM 6 IN. GLASS
FIBER INSULATION ALL AROUND
24 GAUGE
VENTILATED THIMBLE WITH
TWO 1 INCH AIR CHANNELS
CHIMNEY THIMBLE
CHIMNEY FLUE
PART E - (Figure 5)
In addition to the methods shown by A, B, C, and D of Figure 5, a listed factory-built wall pass-through system
may be purchased and installed according to the instructions packaged with it to provide a safe method of
passing chimney connector through a combustible wall for a connection to a masonry chimney.