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4
HOOD EXHAUST
Thefollowingchartdescribesanexampleofonepossible
ductwork installation.
NOTE:Readthesenexttwopagesonlyifyouplantoventyourexhausttotheoutside.Ifyouplantorecirculatetheairback
into the room, proceed to page 6.
OUTSIDE TOP EXHAUST (EXAMPLE ONLY)
NOTE: For back exhaust, care should be taken to align exhaust with space between studs, or wall
shouldbepreparedatthetimeitisconstructedbyleavingenoughspacebetweenthewallstudsto
accommodate exhaust.
* 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.
Thefollowingchartdescribesanexampleofonepossible
ductwork installation.
Installation Instructions
OUTSIDE BACK EXHAUST (EXAMPLE ONLY)
EQUIVALENT NUMBER
DUCT PIECES LENGTH x USED = LENGTH
RoofCap 24Ft. x (1) = 24Ft.
12Ft.StraightDuct 12Ft. x (1) = 12Ft.
(6″Round)
Rectangular-to-Round 5Ft. x (1) = 5Ft.
TransitionAdaptor*
Equivalent lengths of duct pieces are based on actual tests and
reflectrequirementsforgoodventingperformancewithanyventhood.
Total Length = 41 Ft.
EQUIVALENT NUMBER
DUCT PIECES LENGTH* x USED = LENGTH
WallCap 40Ft. x (1) = 40Ft.
3Ft.StraightDuct 3Ft. x (1) = 3Ft.
(3
1
⁄4″ x 10″Rectangular)
90°Elbow 10Ft. x (2) = 20Ft.
Equivalent lengths of duct pieces are based on actual tests and
reflectrequirementsforgoodventingperformancewithanyventhood.
Total Length = 63 Ft.
1” = 2.5 cm; 1’ = 0.3 m
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