7121, Black In-Ground Mounting Post, 43 x 4 x 4 inches, for Use with Mailbox

Post made of heavy-duty 10- and 14-gauge electrogalvanized steel
Features durable powder-coated finish
Can be used with a wooden post for deep in-ground installations
Includes 4 mounting bolts and clear instructions
Accepts all Mail Boss brand Locking Security Mailboxes