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Chimney
Diameter
Chimney Area
in
mm
in
H
W
Pyramid Style Shroud Minimum Dimensions
Chimney
Diameter
in
mm
in
W
H1
mm
in
mm
in
Shaded area represents screened open area. Actual
shape of shroud may vary as long as minimum dimen-
L
sions and minimum open area requirements are met.
Min Width W
mm
in
mm
in
L
H2
Shaded area represents screened open area. Actual
shape of shroud may vary as long as minimum dimen-
sions and minimum open area requirements are met.
B
Min Width W
mm
in
mm
sq in
H: Minimum height of shroud
L: Minimum length of shroud
W: Minimum width of shroud
Min Base B
mm
in
mm
in
L: Minimum length of shroud top opening
W: Minimum width of shroud top opening
H1: Minimum total height of shroud
B: Minimum length of opening along base
H2: Minimum height of opening along base
Area
sq in
mm
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