Barcode Location:delivery point barcode or Intelligent Mail barcode either within address block or within barcode clear zone in lower right corner of mailpiece (202.5.0).
Barcode Window: If the barcode is printed on an insert to appear through a window in the lower right corner, see 202.5.1.3.
Barcode Skew: The combined effects of positional skew (slant or tilt of the entire barcode baseline) and rotational skew (slant or tilt of the individual barcode bars) for a barcode on a card-size or a letter-size piece must be limited to a maximum rotation of the bars of ±5 degrees from a perpendicular to the bottom edge of the piece. The individual bars of a barcode must not shift (be vertically offset) more than 0.015 inch from the average baseline of the barcode (204.1.4.1).