Microwaves cannot be ducted into a common duct work.
Microwave exhaust ductwork.
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Plus the 2 speed exhaust fan removes smoke steam and odors that are produced while cooking on your range.
Both smaller and larger vents than recommended decrease venting performance.
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Do not vent into an attic or crawl space.
The duct must be the sizes listed above for proper draw of air.
A rectangular to round transition adapter must be used.
While both varieties claim to clear the air of odor and heat one system is far superior to the other.
This vent damper door measures approximately 10 inches long x 3 inches wide and fits lg microwaves.
This metal vent damper door closes off the exhaust duct when the fan is not running to stop outside air from entering the microwave unit and opens when the fan turns on to allow air to vent away from the microwave.
L galvanized steel duct.
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The exhaust openings for most microwaves are rectangular in shape and if you are using round ductwork you may need to use a transition collar to convert the round shape of the ductwork to a rectangular shape that can be connected to the microwave.
If round ducting also note the following.
The cooktop light allows you to maintain a clear view of the stovetop below.
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