Idustry Eye: Shop Talk - Understanding Postal, Letter to the Editor

Oblong designs aren’t the only ones that risk failing the test. Tabloids, press-pasted mail pieces, pieces with lightweight cover stocks and interior page stocks, even blow-ins, can affect a catalog’s ability to pass the test.

Consequences?
Unfortunately, the USPS has yet to communicate any official information on the consequences of a failed test, how it’ll determine whether pieces have passed the test or any process for pieces to be prequalified prior to production.