Maryland Commercial Law Section 22-305

      An agreement that is otherwise sufficiently definite to be a contract is not invalid because it leaves particulars of performance to be specified by one of the parties. If particulars of performance are to be specified by a party, the following rules apply:

            (1)      Specification must be made in good faith and within limits set by commercial reasonableness.

            (2)      If a specification materially affects the other party's performance but is not seasonably made, the other party:

                  (A)      Is excused for any resulting delay in its performance; and

                  (B)      May perform, suspend performance, or treat the failure to specify as a breach of contract.