Hillman 3 in. Black & Silver Reflective Mylar Sticker Wide Style Blank high-quality reflective letters that measure three inches and larger, meeting US Coast Guard and 911 requirements for boat registration posting. These versatile stickers can be used on houses, mailboxes, mailbox posts, jet skis, and boats, providing clear and durable identification. Designed to be both functional and easy to apply, this reflective mylar sticker ensures visibility and compliance with important safety standards. Model Number: