GE Appliances JVE40 Owner's Manual And Installation Instructions page 9

Installation Instructions
CHOOSE VENT OPTION
Determine the vent option that your installation will require
from the following choices:
The outside vent exhaust option that your installation
requires will determine the hood knockouts that you
will use.
IMPORTANT:If the hood is to be installed in a recirculating,
non-vented ductless manner, do not knock out any vent
openings in the hood. Only an electrical access hole will be
knocked out of the hood.
Outside top exhaust
(Vertical duct-3¼" x 10" Rectangular)
_Outside rear exhaust 10"
(Horizontal duct-3V/' x Rectangular)
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Recirculating
(Non-vented ductless-Optional)
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