The plastic mounting board can be installed on any Gibraltar 4x4 wood or plastic post. Made from durable polypropylene plastic that will never rust, the mounting board has an ultraviolet inhibitor to extend its service life. Mounting hardware is also included with the plastic mounting board.
When a replacement aluminum mailbox flag is needed, the replacement flag kit answers the challenge. The kit includes an aluminum flag that will not rust, along with mounting hardware, so that installing the replacement flag is a snap. Fits most mailboxes.