EXHIBIT 32.2

CERTIFICATION OF CHIEF FINANCIAL OFFICER PURSUANT TO

RULE 13a-14(b) OR RULE 15d-14(b)

OF THE SECURITIES EXCHANGE ACT OF 1934 AND 18 U.S.C. SECTION 1350

I, Kelly E. Lang, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that the quarterly report of Merix Corporation on Form 10-Q for the quarterly period ended November 28, 2009 fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 and that information contained in such quarterly report on Form 10-Q fairly presents in all material respects the financial condition and results of operations of Merix Corporation.

By: /s/ KELLY E. LANG                                                      

Kelly E. Lang

Executive Vice President and Chief Financial Officer

(Principal Financial Officer)

January 4, 2010