EXHIBIT 31.2

       CERTIFICATION OF THE CHIEF FINANCIAL OFFICER OF GENTEX CORPORATION

I, Enoch C. Jen, certify that:

        1.   I have reviewed this quarterly report on Form 10-Q of Gentex
             Corporation;

        2.   Based on my knowledge, this quarterly report does not contain any
             untrue statement of a material fact or omit to state a material
             fact necessary to make the statements made, in light of the
             circumstances under which such statements were made, not misleading
             with respect to the period covered by this quarterly report;

        3.   Based on my knowledge, the financial statements, and other
             financial information included in this quarterly report, fairly
             present in all material respects the financial condition, results
             of operations and cash flows of the registrant as of, and for, the
             periods, presented in this quarterly report;

        4.   The registrant's other certifying officer and I are responsible for
             establishing and maintaining disclosure controls and procedures [as
             defined in Exchange Act Rules 13a-15(e) and 15d-15(e)] for the
             registrant and have:

                a) designed such disclosure controls and procedures, or caused
                   such disclosure controls and procedures to be designed under
                   our supervision, to ensure that material information relating
                   to the registrant, including its consolidated subsidiaries,
                   is made known to us by others within those entities,
                   particularly during the period in which this quarterly report
                   is being prepared;

                b) evaluated the effectiveness of the registrant's disclosure
                   controls and procedures and presented in this quarterly
                   report our conclusions about the effectiveness of the
                   disclosure controls and procedures, as of the period covered
                   by this quarterly report based on such evaluation; and

                c) disclosed in this quarterly report any change in the
                   registrant's internal control over financial reporting that
                   occurred during the registrant's most recent fiscal quarter
                   (the registrant's fourth fiscal quarter in the case of an
                   annual report) that has materially affected, or is reasonably
                   likely to materially affect, the registrant's internal
                   control over financial reporting; and;

        5.   The registrant's other certifying officer and I have disclosed,
             based on our most recent evaluation of internal control over
             financial reporting, to the registrant's auditors and the audit
             committee of the registrant's board of directors (or persons
             performing the equivalent functions):

                a) all significant deficiencies and material weaknesses in the
                   design or operation of internal control over financial
                   reporting which are reasonably likely to adversely affect the
                   registrant's ability to record, process, summarize and report
                   financial information; and

                b) any fraud, whether or not material, that involves management
                   or other employees who have a significant role in the
                   registrant's internal control over financial reporting;



Date: May 5, 2004

                                                      /s/ Enoch C. Jen
                                                      --------------------------
                                                      Enoch C. Jen
                                                      Vice President, Finance



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