Exhibit 3.23

AMENDED AND RESTATED
ARTICLES OF INCORPORATION

ARTICLE I

     The name of this Corporation is Ergotron, Inc.

ARTICLE II

     The registered agent of this Corporation is Corporation Service Company and the registered office of this Corporation is located at 380 Jackson Street, Suite 700, St. Paul, MN 55101.

ARTICLE III

     This Corporation is authorized to issue an aggregate total of 3,000 shares, all of which shall be designated Common Stock, having a par value of $0.01 per share.

ARTICLE IV

     No shareholder of this Corporation shall have any cumulative voting rights.

ARTICLE V

     No shareholder of this Corporation shall have any preemptive rights by virtue of Section 302A.413 of the Minnesota Statutes (or similar provisions of future law) to subscribe for, purchase, or acquire any shares of the Corporation of any class, whether unissued or now or hereafter authorized, or any obligations or other securities convertible into or exchangeable for any such shares.

ARTICLE VI

     Any action required or permitted to be taken at a meeting of the Board of Directors of this Corporation not needing approval by the shareholders under Minnesota Statutes, Chapter 302A, may be taken by written action signed, or consented to by authenticated electronic communication, by the number of directors that would be required to take such action at a meeting of the Board of Directors at which all directors were present.

ARTICLE VII

     Any action required or permitted to be taken at a meeting of shareholders of this Corporation may be taken by written action signed, or consented to by authenticated electronic communication, by shareholders having voting power equal to the voting power that would be required to take the same action at a meeting of the shareholders at which all

shareholders were present, but in no event may written action be taken by holders of less than a majority of the voting power of all shares entitled to vote on that action.

ARTICLE VIII

     Unless otherwise provided by the Board of Directors, no shareholder of this Corporation shall be entitled to exercise statutory dissenters’ rights under Section 302A.471 of the Minnesota Statutes (or similar provisions of future law) in connection with any amendment to these Articles of Incorporation.

ARTICLE IX

     No director of this Corporation shall be personally liable to the Corporation or its shareholders for monetary damages for breach of fiduciary duty by such director as a director; provided, however, that this Article shall not eliminate or limit the liability of a director to the extent provided by applicable law (1) for any breach of the director’s duty of loyalty to the Corporation or its shareholders, (2) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (3) under Section 302A.559 or 80A.76 of the Minnesota Statutes (or similar provisions of future law), (4) for any transaction from which the director derived an improper personal benefit, or (5) for any act or omission occurring prior to the effective date of this Article. If the Minnesota Statues are amended to authorize the further elimination or limitation of the liability of directors, then the liability of a director to the Corporation, in addition to the limitation on personal liability provided herein, shall be limited to the fullest extent permitted by the amended Minnesota Statues. No amendment to or repeal of this Article shall apply to or have any effect on the liability or alleged liability of any director of the Corporation for or with respect to any acts or omissions of such director occurring prior to such amendment or repeal.