DuraVent DuraChimney II Shroud - Manual (Page 6)

6
Arch / Mailbox Style Shroud Minimum Dimensions
Chimney
Diameter
(inches)
Chimney
Area
(inches)
Min
Height
H (inches)
Min
Length
L (inches)
Min
Width
W (inches)
Min
Open Area
per side (sq.
in)
Min
Total Open
Area (sq. in)
10 79 24 30 30 270 540
12 113 24 30 30 386 772
14 154 24 32 32 520 1040
16 201 24 32 32 680 1360
Figure 3
Table 2: Arch/Mailbox Style Shroud Minimum Dimensions
H: Minimum height of Shroud
L: Minimum length of Shroud
W: Minimum width of Shroud
Shaded area represents screened Open Area. Actual shape
of Shroud may vary as long as minimum dimensions and
minimum Open Area requirements are met.
H
W
L
ARCH / MAILBOX STYLE SHROUD
The Arch or Mailbox style shroud generally has
two solid sides and a solid top. The exhaust
openings are on the two (2) open ends of the
arch. (Figure 3) Table 2 lists the minimum
Shroud dimensions, the minimum Open Area
per side, and the minimum Total Open Area
for the Shroud, depending on the diameter of
DuraChimney II installed.