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Storm collar must
1/2 in. air space
be installed 1 in.
established by
off chase top
spacing clips
1/2 in. Air Space
Spacing Clips
Note:
around all four sides.
Chase top
flashing
Roof
radiation
shields
Required
Chase Top
spacing
Collar
clips
Screws
to hold
flashing to
chase top
Additional
Structural Support
1 1/2 in. ventilation
opening around
chimney pipe
1 1/2 in. ventilation
opening around
chimney pipe
Roof Radiation Shields
placed here
Chase Top Collar
Slope downward
Turn-down
Drip edge
Insect-guard screening
may be added between
chase and chase top
flashing.
Sealant
Screw or
Pop-rivet
Insect
Screen
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