Best way to seal off a mail slot

Best way to seal off a mail slot mail slot insulation Insulated Universal Single Side Surface Mount Matte Black Mail Slot Only 12 left in stock mail door slot Installation instructions for an Elite Model DraftDodger™ Insulated Mail Slot

mail door slot MAIL SLOT definition: 1 a rectangular hole in the door or in a wall near the entrance of a house or other building… Learn more

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