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Quick Service Guide 301aCommercial FlatsDesigning Flats for Automated ProcessingMay 12, 2008 Related QSGs301, Physical Standards for Discount Flats 330b, First-Class Mail Automation Flats 340b, Standard Mail Automation Flats 360, Bound Printed Matter Flats 707g, Periodicals Barcoded (Automation) Flats OverviewFlat-size pieces meeting the applicable automation standards in 301.3.0 are entitled to automation or Periodicals machinable prices. Size, weight, thickness, polywrap, and flexibility standards vary for the class of mail. For eligibility and preparation standards for specific price options, see the appropriate Quick Service Guide above. Physical Standards (301.3.0)Shape: rectangular, with four square corners, or with finished corners that do not excced a radius of 0.125 inch (1/8 inch). Dimensions: The length of a flat-size mailpiece is the longest dimension. The height is the dimension perpendicular to the length (301.1.2). Maximum weight:
Uniform thickness: The contents must be uniformly thick so that any bumps, protrusions, or irregularities do not cause more than 1/4 inch variance in thickness. The mailpiece must have a smooth and regular shape and be free of creases, folds, tears, or other irregularities (301.3.6). Flexibility and deflection: automation flats must meet the flexibility standards in 301.1.3 and deflection standards in 301.3.2.3. Polywrap films and similar coverings must meet the standards in 301.3.3. A list of approved polywrap and polywrap manufacturers is available on ribbs.usps.gov. The wrap direction must be around the longer axis of the mailpiece, with the seam parallel to that axis. The longer axis is always parallel to the length of the mailpiece. The preferred seam placement is on the nonaddressed side of the mailpiece. Prohibitions: Clasps, strings, buttons, or other protrusions; also staples, unless properly used as a binding method (301.3.6). Barcodes (302.4.0)Barcodes must be at least 1/8 inch from any edge of the address side. Address block barcodes must be in one of these four positions: The surface the barcode is printed on must meet the reflectance standards in 708.4.4. The minimum clearance between the barcode and any information line above or below it within the address block must be at least 0.040 (1/25) inch for POSTNET barcode or 0.028 inch for an Intelligent Mail barcode. The separation between the barcode and the top line or bottom line of the address block must not exceed 0.625 (5/8) inch. The clearance between the leftmost and rightmost bars and any printing must be at least 0.125 (1/8 inch). Window Envelope Barcode Placement:
For envelope window, a clear space must be maintained when insert is moved to its full limits in each direction within envelope (202.5.0). Address Label Barcode Placement:
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