General information
4
HOOD EXHAUST
NOTE: Read these next two pages only if you plan to vent your exhaust to the
outside. If you plan to recirculate the air back into the room,proceed to page 6.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
The following chart describes an example of one possible ductwork in stallation.
OUTSIDE BACK EXHAUST (EXAMPLE ONLY)
The following chart describes an example of one possible ductwork in stallation.
* IMPORTANT: If a rectangular-to -round transition adaptor is used, the bottom corners
of the damper will have to be cut to fit, using the tin snips, in order to allow free
movement of the damper.
EQUIVALENT
LENGTH
DUCT PIECES
DUCT PIECES
NUMBER x
USED
USED
=
EQUIVALENT
LENGTH
NUMBER
EQUIVALENT
LENGTH*
EQUIVALENT
LENGTH
Roof Cap 24 Ft. x (1) = 24 Ft.
12 Ft. Straight
( 6"Duct Round )
12 Ft. x (1) = 12 Ft.
Rectangular-to-
Round Transition
Adaptor
*
5 Ft. x (1) = 5 Ft.
Equivalen lengths of duct pieces are based on
actual tests and reflect requirement for good
venting performance with any vent hood.
Total Length
Equivalen lengths of duct pieces are based on
actual tests and reflect requirement for good
venting performance with any vent hood.
Total Length
= 41 Ft.
NOTE: For back exhaust, case should be taken to align exhaust with space between studs,
or wall should be prepared at the time it is constructed by leaving enough space between
the wall studs to accommodate exhaust.
x =
Wall Cap 40 Ft. x (1) = 40 F t.
3 Ft. Straight
Duct (3…" x 10"
Rectangular)
3 Ft. x (1) = 3 Ft.
90° Elbow 10 Ft. x (2) = 20 Ft.
= 63 F t.
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