it Snow ! . mailbox cover a collection of snowflakes falling from the smart organisation sky. This winter mailbox cover is a precious to dress up your yard or driveway for the cold-blooded, winter months. to check criterion size steel mailboxes measuring 6.5 '' x 19 ''. on indestructible vinyl material with magnetic strips to easily attach to your mailbox. Each mailbox cover with 3 sets of resinous numbers.