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 the included terms may not be contradicted by evidence of any prior agreement or of a contemporaneous oral agreement but may be explained or supplemented:
Minn. Stat. § 336.2A-202
1989 c 232 art 1 s 2A-202