3 inch wide decal. It is a tough job being a mail carrier, thank them! Mail Box Thank You Mailbox Decal Waterproof Sticker Vinyl Car Decal.  This is made from 3M materials and is laminated will last YEARS!  Please check our other auctions for more great vinyl deals, wheel cap cover kits, Muscle Car Restoration decals and more. We accept PayPal, happy bidding and good luck.