145.zip ✔

: More than 6-1/8 inches but not more than 12 inches high.

: All mailpieces must be separated by delivery route or Post Office Box section.

: Delivery statistics and route information must be obtained using the USPS EDDM web tool . Physical Standards for 145 Flats 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 6-1/8 inches but not more than 12 inches high

: Must be rectangular with square or slightly rounded corners (maximum 0.125-inch radius). Alternative Reference: KUIU ULTRA Merino 145 Zip-T Go to product viewer dialog for this item.

: Prepared mail must be presented directly to the specific delivery Post Office or destination unit (DDU/S&DC) responsible for those routes. Physical Standards for 145 Flats : More than

: 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.