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4
HOOD EXHAUST
Thefollowingchartdescribesanexampleofonepossible
ductwork installation.
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)
NOTE: For back exhaust, care 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.
* 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.
Thefollowingchartdescribesanexampleofonepossible
ductwork installation.
Installation Instructions
OUTSIDE BACK EXHAUST (EXAMPLE ONLY)
EQUIVALENT NUMBER
DUCT PIECES LENGTH x USED = LENGTH
RoofCap 24Ft. x (1) = 24Ft.
12Ft.StraightDuct 12Ft. x (1) = 12Ft.
(6Round)
Rectangular-to-Round 5Ft. x (1) = 5Ft.
TransitionAdaptor*
Equivalent lengths of duct pieces are based on actual tests and
reflectrequirementsforgoodventingperformancewithanyventhood.
Total Length = 41 Ft.
EQUIVALENT NUMBER
DUCT PIECES LENGTH* x USED = LENGTH
WallCap 40Ft. x (1) = 40Ft.
3Ft.StraightDuct 3Ft. x (1) = 3Ft.
(3
1
4 x 10Rectangular)
90°Elbow 10Ft. x (2) = 20Ft.
Equivalent lengths of duct pieces are based on actual tests and
reflectrequirementsforgoodventingperformancewithanyventhood.
Total Length = 63 Ft.
1” = 2.5 cm; 1’ = 0.3 m
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