39 CFR 3030.221: Individual product requirement.

Whenever the Postal Service files a rate adjustment filing affecting a class of mail which includes a product where the attributable cost for that product exceeded the revenue from that product, as determined by the Commission, the Postal Service shall increase the rates for each non-compensatory product by a minimum of 2 percentage points above the percentage increase for that class. This section does not create additional rate authority applicable to any class of mail. This section only applies to products classified within classes for which the overall class revenue exceeded the attributable cost for that class. This section does not apply to a non-compensatory product for which the Commission has determined that the Postal Service lacks independent authority to set rates (such as rates set by treaty obligation).