The “maximum period of use” of a commercial is 21 months (a total of seven 13-week holding fee cycles). Provided the producer continues to make timely holding fee payments, the performer is held exclusive to the product for the 21-month period. If the performer (or his/her representative) does not send a timely renegotiation letter, the producer can extend the maximum period of use for an …
https://www.sagaftra.org/how-long-performer-%E2%80%9Cheld%E2%80%9D-commercial

