New Jersey § 12a:2-202

§ 12a:2-202.

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 (a) by course of dealing or usage of trade (12A:1-205) or by course of performance

(12A:2-208); and (b) 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.