Total
Equivalent Quantity Equivalent
Duct Piece Dimensions Length* Used Length
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straight length
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8" round to
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to 8" round transition 5 ft.
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.
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Round
wall cap
with damper 32 ft.
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with damper 75 ft.
Round
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Installation Preparation
6
DUCT FITTINGS
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permissible lengths for duct runs to
outdoors.
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sible
equivalent lengths!
Maximum duct length:
100 ft. for range hoods.
Flexible ducting:
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the equivalent feet values in the table
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duct should be straight and smooth and
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Do NOTXVHÀH[LEOHSODVWLFGXFWLQJ
Total Duct Run
Note: Any home ventilation system,
such as a ventilation hood, may
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gas furnaces, gas water heaters and
other naturally vented systems. To
minimize the chance of interruption of
such naturally vented systems, follow
the heating equipment manufacturer’s
guidelines and safety standards such
as those published by NFPA and
ASHRAE. When applicable, install any
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accordance with local building code
requirements. Visit GEAppliances.com
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lent length of duct pieces are based on actual tests conducted
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venting performance with any ventilation hood.
This Hood Must
Use 8" Round Duct.
It Can Transition to
3-1/4" x 12" Duct.