USPS Approved Mailboxes

The incoming mail slot of your Mail Boss must be 41-45” above the road surface (By contrast, with unlocked mailboxes, the bottom of the mailbox must be 41-45”

mail The lip over the letter slot often broke, letting in rain and snow By 1891 the Post Office Department had over 48,400 letter boxes of various

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wd 138 slot The USPS advises, If customers simply used retail service or inside wall drop slots to send their Mail, instead of depositing it to sit