BOO!! Say Happy Halloween with a brilliant oversized mailbox cover featuring all the Halloween favorites: Witches, Ghosts, Jack O Lanterns, Skulls, Bats, Owls, Black Cats, Trick Or Treat, Happy Halloween, Spiders and more from Flagsrus. Add a splash of color with a vinyl weather resistant mailbox cover! All covers feature a slot for the postal carrier alert flag. These covers attach to the mailbox with magnets. The standard size fits 6.5" x 19" mailboxes. No worry if you have a plastic or aluminium box, see the Adapter Kit.