This durable sign holder is an economical way to display marking signs. The sign holder is made of galvanized steel and crimped on four edges to keep signs in place. The 7" x 7" heavy-gauge base plate keeps the sign upright and stable, even when not weighted down. Overall height is 16". 25 sign holders and 25 waterproof and reusable cards are included in each case. Crimped edge is 3/8".