N.C. Gen. Stat. § 66-305

A rental contract for the storage of personal property in a self-service storage business shall state, in bold type of a minimum size of 14 points and conspicuously placed, the terms regarding the imposition of late fees, the terms regarding any consequences of a late payment, and the terms, if any, that pertain to the payment of court costs, attorneys' fees, and any other costs associated with the payment of late fees or with judgment against the consumer for late rental payments or late fees.