State Codes and Statutes
Statutes > Washington > Title-62a > 2a > 62a-2a-202Final written expression: Parol or extrinsic evidence.
Terms with respect to which the confirmatory memoranda of the parties agree or which are otherwise set forth in a writing intended by the parties as a final expression of their agreement with respect to such terms as are included therein may not be contradicted by evidence of any prior agreement or of a contemporaneous oral agreement but may be explained or supplemented:
(1) By course of dealing or usage of trade or by course of performance; and
(2) By evidence of consistent additional terms unless the court finds the writing to have been intended also as a complete and exclusive statement of the terms of the agreement.
[1993 c 230 § 2A-202.]
Notes: Effective date -- 1993 c 230: See RCW 62A.11-110.
