This section outlines the requirements for preparing EDDM-Retail flats to ensure they are accepted for delivery.
: 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. 145.zip
: More than 1/4 inch but not more than 3/4 inch thick. : More than 11-1/2 inches but not more than 15 inches long
: More than 11-1/2 inches but not more than 15 inches long. Physical Standards for 145 Flats : It is
: Prepared mail must be presented directly to the specific delivery Post Office or destination unit (DDU/S&DC) responsible for those routes.
: Delivery statistics and route information must be obtained using the USPS EDDM web tool . Physical Standards for 145 Flats
: It is a thermoregulating, mid-weight wool-nylon blend designed as a versatile base layer or next-to-skin piece. 145 Mail Preparation - Postal Explorer - USPS