Main Category : Other Mailbox Products - USPS Approved & For Private Use/Access / Replacement Mailbox Locks Replacement Mailbox Locks For Horizontal Mailboxes/Thumb Latch Lock [ enlarge ] Item Id: 7475485 Qty :   Thumblatch Style Door Lock Item # H30799 Price: $19.95 ea. (Packed 3 per box) $59.85 per box. Master door commercial lock for private use/access. Item # H30844 Price: $19.95 ea. (Sold individually)