Dog Welcome Spring Magnetic Mailbox Cover Floral Puppy Briarwood Lane Mailbox Covers fits standard size 6" by 19" mail boxes and meets USPS postal regulations Made from high quality vinyl for vivid, long lasting images that withstand both sun and rain Magnets hold the mailbox cover in place on metal mailboxes and can be removed easily allowing you to change the design every season or whenever you would like Features exclusive art designs Extraordinary gift idea for someone.