: Mailings must consist of at least 200 pieces (or 50 pounds) but no more than 5,000 pieces per day per 5-digit ZIP Code.
: More than 11-1/2 inches but not more than 15 inches long. 145.zip
: Prepared mail must be presented directly to the specific delivery Post Office or destination unit (DDU/S&DC) responsible for those routes. : Mailings must consist of at least 200
: All mailpieces must be separated by delivery route or Post Office Box section. the pieces must meet specific dimensions:
To qualify under these standards, the pieces must meet specific dimensions: