Roof radiation
shields
Allow a 1 in. (25 mm) air gap between
storm collar and chase top flashing
1/2 in. (13 mm) air space
established by spacers
1/2 in.
overhang
14 in. (345 mm)
diameter chimney
must extend at least
6 in. (152 mm) above
chase top flashing.
DuraChimney II
Pipe
1/2 in.
(13 mm)
Spacers for chase
top flashing
Chase Top
Flashing
Storm Collar
20 in. diameter
opening
Chimney Cap
Maintain 2 in. (51 mm)
clearance between
DuraChimney II and
chase enclosure
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