Fort Knox Mailbox LG Standard B Large Standard Mailbox - Black Fort Knox Large Standard Mailbox 96 LBS - Black - Size ( 12" x 12" x 23" ) 96 LBS -(Mailbox Only) Incoming mail slot - 1 3/4" x 11 1/2" Hand welded 1/4" steel shell and 3/16" reinforced steel doors 7 pin tubular lock, 2 high-security tubular keys Note: No hardware included