Mailbox Mounting Bracket, Universal Mounting Adapter Plate

Applications - Multiple hole patterns in mailbox mounting plates are compatible with most post mount mailboxes of all sizes (bottom mount) | Easy to Install - Steel mailbox mounting plate can be mounted on any architectural mailbox post, 4x4 wood post or hollow post. Suitable Mailbox Hole Size: 10"x4"; 5"x5"; 7"x3-1/4 3-1/4"x3-1/4" | Heavy Duty - Mailbox mounts are made of heavy-duty steel and are rugged enough to withstand harsh weather conditions | Thick design - The Mailboxes Mounting Board is 4mm thick, 266% thicker than other 1.5mm thick mounts, which not only serves as a carrier for the mailboxes to be attached to the post, but also strengthens the mailboxes | Package - Includes mailbox mounting plate and mounting hardware