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and they made it easy to order.
flue pipe needs to be measured by its INSIDE measurement.
Typically... an air cooled flue system will consist of
an inner and outer pipe(s) with an air space between them. Some
systems may have braces, wire, tabs or smaller openings between the
layer(s) of pipe. The distinguishing factor for this system is
that the spacing channels from the top where the chimney cap would go
all the way to the start of the flue system.
Note: All layers of pipe need to be at the same level
for proper installation. Most pipe can be trimmed or extended to
CAUTION: An Air Cooled
Chimney Cap must be used for Air Cooled Pipe.
DO NOT attempt to use a standard STS StormShield Cap with air cooled pipe.
Air cooled double and triple
wall flue systems need an air cooled chimney cap.
The inner pipe of an air cooled system is for smoke
and flue gases.
... the larger surrounding outer pipe(s) will vary in size depending on
the air space between the pipes and manufacturers design. This air space needs to be
vented to insure the flue systems proper function. An air cooled pipe system uses the air space as an insulation
value. The more spacing between the pipes, the less heat to the
outer pipe(s), and the closer one can build to the system.
Click the links below for
some tips and explanations....