Lambro 224W 4-In. White Plastic Preferred Hood Vent

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Allows for maximum exhaust airflow in 4 in. exhaust venting applications;
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For new or replacement vent installations;
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Built-in damper prevents back drafts;
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Removable guard prevents critters from entering home through vent;
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11 in. length pipe for through the wall installation;
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Installation screws and clamps sold separately;