4 Door 4C Horizontal Mailbox

4 Door USPS Approved 4C Mailboxes are made from a high strength stainless steel. These secure mailboxes feature a flush surface design with concealed hinges. Tampering and prying open doors is close to impossible. Double-wall door design of these locking mailboxes increases the pull test capacity. Closer tolerances of each box reduces the size of pry points. Units feature a 3-point cam lock with protective lock rim. Mailbox door secures in four places including hinge side. Each locking mailbox unit comes with an outgoing mail slot and carrier access door. Outgoing mail slot features a saw tooth guard to prevent mail from being fished out. Recommended for Indoor Use Only.