Exhibit 3.18

EDG-19/ 00172 21944_42	729115033 CERTIFICATE OF INCORPORATION OF IRVIN INDUSTRIES (DEL), INC.
ARTICLE FIRST The name of the corporation (herein called the “Corporation”) is Irvin Industries (Del), Inc. ARTICLE SECOND The address of the registered office of the Corporation in the State of Delaware is Corporation Trust Center, 1209 Orange Street, City of Wilmington, County of New Castle. The name of the registered agent of the Corporation at such address is The Corporation Trust Company. ARTICLE THIRD The purpose of the Corporation is to engage in any lawful act or activity for which corporations may be organized under the Delaware General Corporation Law. ARTICLE FOURTH The total number of shares of all classes of stock which the Corporation shall have authority to issue is 1,000 shares of a par value of One Cent ($.01) each, designated as Common Stock.

ARTICLE FIFTH

The name and mailing address of the incorporator is as follows:

Name	Mailing Address
Evelyn D. Giaccio	c/o O’Sullivan Graev & Karabell
	30 Rockefeller Plaza
	41st Floor
	New York, New York 10112

ARTICLE SIXTH

The number of directors of the Corporation shall be such as from time to time shall be fixed in the manner provided in the By-laws of the Corporation. The election of directors of the Corporation need not be by ballot unless the By-laws so require.

ARTICLE SEVENTH

A director of the Corporation shall not be personally liable to the Corporation or its stockholders for monetary damages for breach of fiduciary duty as a director, except for liability (i) for any breach of the director’s duty of loyalty to the Corporation or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, or (iv) for any transaction from which the director derived any improper personal benefit. If the Delaware General Corporation Law is amended after the date of incorporation of the Corporation to authorize corporate action further eliminating or limiting the personal liability of directors, then

-2-

the liability of a director of the Corporation shall be eliminated or limited to the fullest extent permitted by the Delaware General Corporation Law, as so amended.

Any repeal or modification of the foregoing paragraph by the stockholders of the Corporation shall not adversely affect any right or protection of a director of the Corporation existing at the time of such repeal or modification.

ARTICLE EIGHTH

For the management of the business and for the conduct of the affairs of the Corporation, and in further definition, limitation and regulation of the powers of the Corporation and of its directors and stockholders, it is further provided:

(a) In furtherance and not in limitation of the powers conferred by the laws of the State of Delaware, the Board of Directors is expressly authorized and empowered:

(i) to make, alter, amend or repeal the By-laws in any manner not inconsistent with the laws of the State of Delaware or this Certificate of Incorporation;

(ii) without the assent or vote of the stockholders, to authorize and issue securities and obligations of the Corporation, secured or unsecured, and to include therein such provisions as to redemption, conversion or other terms thereof as the Board of Directors in its sole

-3-

discretion may determine, and to authorize the mortgaging or pledging, as security therefor, of any property of the Corporation, real, personal or mixed, including after-acquired property;

(iii) to determine whether any, and if any, what part, of the net profits of the Corporation or of its surplus shall be declared in dividends and paid to the stockholders, and to direct and determine the use and disposition of any such net profits or such surplus; and

(iv) to fix from time to time the amount of net profits of the Corporation or of its surplus to be reserved as working capital or for any other lawful purpose.

In addition to the powers and authorities herein or by statute expressly conferred upon it, the Board of Directors may exercise all such powers and do all such acts and things as may be exercised or done by the Corporation, subject, nevertheless, to the provisions of the laws of the State of Delaware, of this Certificate of Incorporation and of the By-laws of the Corporation.

(b) Any director or any officer elected or appointed by the stockholders or by the Board of Directors may be removed at any time in such manner as shall be provided in the By-laws of the Corporation.

-4-

(c) From time to time any of the provisions of this Certificate of Incorporation may be altered, amended or repealed, and other provisions authorized by the laws of the State of Delaware at the time in force may be added or inserted, in the manner and at the time prescribed by said laws, and all rights at any time conferred upon the stockholders of the Corporation by this Certificate of Incorporation are granted subject to the provisions of this paragraph (c).

ARTICLE NINTH

Whenever a compromise or arrangement is proposed between the Corporation and its creditors or any class of them and/or between the Corporation and its stockholders or any class of them, any court of equitable jurisdiction within the State of Delaware may, on the application in a summary way of the Corporation or of any creditor or stockholder thereof or on the application of any receiver or receivers appointed for the Corporation under the provisions of Section 291 of Title 8 of the Delaware Code or on the application of trustees in dissolution or of any receiver or receivers appointed for the Corporation under the provisions of Section 279 of Title 8 of the Delaware Code, order a meeting of the creditors or class of creditors, and/or of the stockholders or class of stockholders of the Corporation, as the case may be, to be summoned in such manner as the said court directs. If a majority in number representing three-fourths in value of the creditors or class of creditors, and/or of the

-5-

stockholders or class of stockholders of the Corporation, as the case may be, agree on any compromise or arrangement and to any reorganization of the Corporation as a consequence of such compromise or arrangement, the said compromise or arrangement and the said reorganization shall, if sanctioned by the court to which the said application has been made, be binding on all the creditors or class of creditors, and/or on all the stockholders or class of stockholders, of the Corporation, as the case may be, and also on the Corporation.

IN WITNESS WHEREOF, I, the undersigned, being the sole incorporator hereinabove named, for the purpose of forming a corporation pursuant to the General Corporation Law of the State of Delaware, DO HEREBY CERTIFY, under penalties of perjury, that this is my act and deed and that the facts hereinabove stated are truly set forth and, accordingly, I have hereunto set my hand as of the 24th day of April, 1989.

Evelyn D. Giaccio

Sole Incorporator

-6-