Vertical Through the Wall Mail Drop Slot Item # CBDVTW

mail slot catcher   Dan mailbox slot for door

slot forming flanges , and a person may , by glancing at the signal , tell MAIL - CATCHER

Specially designed to collects and holds mail from a mail slot Fits on all horizontal mail slots Help mail slot users everywhere with the only space efficient Mail Slot Catcher for Door Mail Slot, Black Indoor Mail Slot Cover Interior Mail ; Quantity 3 available ; Item Number 315400747860 ; Power Source Not Applicable

id 777 slot If you are handy, you can sew a simple sac and secure it with Velcro Look for DIY mail slot catcher Etsy sells them too No Copyrighted I dont agree with your edit of my question title though - I'm waterproofing the box, not the slot