Final 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 record 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:
(a) By course of performance, course of dealing, or usage of trade (RCW
62A.1-303); and
(b) By evidence of consistent additional terms unless the court finds the record to have been intended also as a complete and exclusive statement of the terms of the agreement.
NOTES:
Construction—Effective date—2023 c 266: See notes following RCW
62A.12-101.
Application—Savings—2012 c 214: See notes following RCW
62A.1-101.