It is a lot more efficient for a mail carrier to deliver mail to one centralized location instead of delivering from house to house. Consequently, CBU’s provide the USPS with both time savings and significant fuel-efficiency on their postal vehicles. With CBU’s, the USPS also reduces labor costs as each mail carrier will be able to more efficiently deliver their mail. Cluster mailboxes are more secure than individual curbside mailboxes. Multiple safety features protect against mail theft. Each tenant is assigned a mail compartment that is secured with a heavy-duty cam. An anti-fish plate on the rear of the outgoing mail slot helps block the tampering of mail.
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