Main Category : Other Mailbox Products - USPS Approved & For Private Use/Access Replacement Mailbox Locks For CBU Mailboxes H1570 [ enlarge ] Item Id: 7475475 Qty :   CBU F-Series Pedestal Mailboxes H1570 Tenant Door Lock w/ 3 keys (CBU) Item # HK91910 Price: $14.95 ea. (Packed 2 per box) $29.90 per box.