Best way to seal off a mail slot

Home Improvement Door Mail Slots mail slot privacy hood To prevent this, install a metal hood over the top of the slot on the interior side of the door A hood will allow mail to come in while mail slot door IVES high quality door mail slots are offered for a building's external use, offered in many finishes to match the surrounding door hardware of the opening

mail slot insulation Deltana - Letter Box Hood · Deltana