Is it possible to soundproof a door with a mail 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

insulation, polyethylene sheeting, duct tape, foam gaskets, and tension mail slot in the door, consider installing an outside mailbox and stuffing

mail drop slot Such is the case with our new antique mail slot for our restored front door Insulation · Insurance · Intervention · Ireland

mail slot cover Plumbing & Pipe Insulation · Window & Door Screens · View All Products · PDF Mail Slot – 13″ Aluminum mail slots from M-D Building Products are durable