Ideas for sealing up a drafty through-wall mail slot

Decorative mail slot cover Aluminum letter slot that is no longer functioning Great for covering an existing hole or as a decorative piece

The Mail Slot Sleeve was developed to cover the edges of exterior door openings and prevent mail from falling into hollow core doors Made from stainless steel

mail slot for wall The cover plate which goes on the exterior has a slot cut through which allows items to be dropped down the chute The width of the slot is 10 inches and the

mailbox slot cover Mail Door Slot Cover · 10 X 3 Mailbox Slot 26D · Stainless Steel Door Mail Slot With Extra Large Mail Catcher And Combination Lock