Don't use post office drop boxes on Sundays or holidays, USPS warns

USPS Shrinks If It Fits It Ships Sizes usps mail slot 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 usps mail slot requirements 20 Tenant Doors with 1 Master Door and 1 Outgoing Mail Compartment - 1400 Series USPS 4B+ Approved Horizontal Replacement Mailbox

slot power of thor 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”