145.zip May 2026

: 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.

: 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.

: More than 11-1/2 inches but not more than 15 inches long. 145.zip

If your request refers to technical text for a product description, "145 Zip" often refers to the from KUIU . Material : Uses Nuyarn® Merino technology.

: 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

To qualify under these standards, the pieces must meet specific dimensions:

: Delivery statistics and route information must be obtained using the USPS EDDM web tool . Physical Standards for 145 Flats : More than 11-1/2 inches but not more than 15 inches long

This section outlines the requirements for preparing EDDM-Retail flats to ensure they are accepted for delivery.