Exhibit 3.18




                            ARTICLES OF INCORPORATION

                               OF M. LAMP COMPANY

                                        I

      The name of this corporation is M. LAMP COMPANY.

                                       II

      The purpose of this corporation is to engage in any lawful act or activity
for which a corporation may be organized under the General Corporation Law of
California other than the banking business, the trust company business, or the
practice of a profession permitted to be incorporated by the California
Corporations Code.

                                       III

      The name and address in the State of California of this corporation's
initial agent for service of process is:

                                R. James Shaffer
                                One Golden Shore
                          Long Beach, California 90802

                                       IV

      This corporation is authorized to issue only one class of shares of stock;
and the total number of shares which this corporation is authorized to issue is
1,000.

DATED:  December 12, 1986.


                               /s/ R. James Shaffer
                               -----------------------------------
                                 (signature)

                               R. James Shaffer
                               ------------------------------------
                                 (Typed name of incorporator)

      I hereby declare that I am the person who executed the foregoing Articles
of Incorporation, which execution is my act and deed.


                               /s/ R. James Shaffer
                               -----------------------------------
                                 (Signature of Incorporator)





MARBRO LAMP COMPANY  

                            CERTIFICATE OF AMENDMENT

                                       OF

                            ARTICLES OF INCORPORATION

R. James Shaffer certifies that:

      1.    He is the sole incorporator of M. Lamp Company, a California
            corporation.

      2.    He hereby adopts the following amendment of the articles of
            incorporation of this corporation:

                  Article I is amended to read as follows: "The name of this
                  corporation is Marbro Lamp Company."

      3.    No directors were named in the original articles of incorporation
            and none have been elected.

      4.    No shares have been issued.

I further declare under the penalty of perjury under the laws of the State of
California that the matters set forth in this Certificate are true and correct
of my own knowledge.

Date:  December 24, 1986.


                                          /s/ R. James Shaffer
                                          --------------------------------------
                                          R. James Shaffer, Incorporator