Replacing That Old Vertical Mail Slot with A New Mailbox or Doorbell

Insulating the Mail Slot - Montclair mail slot insulation Designed for use on exposed doors to prevent wind from forcing rain and snow through the slot The very large opening will accommodate small packages Bronze mail slot cover plate The CRL No-Draft Mail Slot has two door flaps, both spring-loaded and weather-stripped, as well as an internal brush strip for greater insulation and privacy

mail slot cover interior I used foam weatherstrip tape with the adhesive backing It's not fully airtight, but much better than previously, and the mail slot still