Corporate Governance Guidelines

As of September, 2007

The following Corporate Governance Guidelines have been adopted by the Board of Directors of WESCO International, Inc. These guidelines are established to assist directors in fully understanding and effectively implementing their functions while assuring the Company's ongoing commitment to high standards of corporate conduct and compliance. It is the responsibility of the Board's Nominating and Governance Committee to annually review and assess these Corporate Governance Guidelines and to recommend any necessary changes to the Board of Directors.

Although each of our directors is expected to fulfill his or her duties in an overall spirit of good corporate conduct, these Guidelines are intended to provide a framework for our system of corporate governance and to address specific issues pertaining to the Company's policies or programs, including:

• Director Qualifications;
• Director Responsibilities;
• Committees of the Board;
• Director Access to Officers and Employees;
• Director Compensation;
• Director Succession;
• Director Orientation and Continuing Education;
• Evaluation of the CEO; and
• Annual Performance Evaluations.

New and continuing members of the Board are encouraged to periodically review these guidelines and to continue to foster a corporate culture focused on efficient and ethical management and governance.

Director Qualifications
Significant Changes in Job Responsibilities of Directors
Elected Term
Director Responsibilities
Committees of the Board
Meetings in Executive Session
Director Access to Officers and Employees
Director Compensation
Succession Strategy
Director Orientation and Continuing Education
Evaluation of the CEO
Annual Performance Evaluation

Director Qualifications
The Board will consist of a majority of directors who qualify as "independent" directors within the meaning of the NYSE Listed Company Corporate Governance Standards and the Company's independence standards. The Nominating and Governance Committee will review with the Board at least annually the qualifications of new and existing Board members, considering the level of independence of individual members, together with such other factors, including overall skills and experience. This affirmative determination of independence will be disclosed in the Company's public filings. The Board will also disclose in its public filings the standards by which it determines that a director is independent. The Nominating and Governance Committee will also assess the Company's on-going compliance with the independence and other standards set by NYSE rules. We expect our Directors to abstain from voting or commenting on any issue(s) that might be perceived as a potential conflict of interest.

Significant Changes in Job Responsibilities of Directors
Company employees who are also directors of the Company are expected to resign from the Board at the time that they relinquish their corporate officer position with the Company. The Board expects other directors who change the principal employment positions they held when they became members of the Board to promptly notify the Chairman of the Board of such change. The Chairman will refer the change in status to the Nominating and Governance Committee who will determine whether or not to seek the director's resignation in light of the particular circumstances (including the director's new employment position (if any) and its impact on the director's independence).

Elected Term
We have determined as a Board to elect Directors to a three-year term with no limits with regard to length of service on the Board. Our Board is organized into three classes, each standing for re-election every third year. The Directors standing for election or re-election will be recommended to the full Board as director nominees by the Nominating and Governance Committee. In recommending nominees, the Nominating and Governance Committee will annually review the composition of the Board affording each director whose term is expiring the opportunity to continue to serve on the Board to the extent deemed appropriate by the Committee and desirable to the individual director. The Board of Directors has the authority to increase or decrease the number of directors and has the power to fill any vacancies that may occur. As of age 70, directors will not be considered for re-election to the Board.

Director Responsibilities
The basic responsibility of each director is to act on the basis of his or her informed business judgment in a manner such director reasonably believes to be in the best interests of the Company. In discharging their obligations to the Company, members of the Board are expected to rely, to the extent reasonable, on the honesty and integrity of the Company's management and its outside auditors and advisors.

As part of their fiduciary duty to the Company, members of the Board are expected to prepare for and attend, either in person or telephonically, as applicable, all meetings of the Board and any committee of the Board on which they serve. It is each Director's duty to assure that such meetings are scheduled and held in a manner and with such frequency that is sufficient to provide for the efficient and responsible oversight of the Company.

The Chairman of the Board or applicable committee of the Board will prepare and distribute in advance an agenda of the topics to be reviewed, discussed and/or acted upon at Board or Committee meetings. Individual directors are free to request additions to the agenda or otherwise raise questions regarding the agenda either prior to or during any such meeting. Information and data that are important to the directors' understanding of the business to be conducted at any such meeting should, to the extent practicable, be distributed to the appropriate directors sufficiently in advance of any such meeting, and each director should endeavor to fully review any such materials prior to attending the meeting.

In addition to any other regularly scheduled meetings of the Board, the non-management members of the Board will meet in executive session at least twice annually. The non-management directors will choose one non-management member of the Board to preside at such executive sessions, and the Company will disclose the identity of such presiding director(s) in its annual Proxy Statement.

As necessary or appropriate in connection with the discharge of its duties, the Board and each committee thereof will be entitled and empowered to engage and seek the advice of outside legal, financial and other advisors.

Committees of the Board
As provided in the Company's Bylaws, the Board may from time to time establish such committees as it deems appropriate. However, in accordance with NYSE rules, the Company will at all times have an Audit Committee, a Compensation Committee and a Nominating and Governance Committee. These three committees are referred to as standing committees. The members of these committees will meet the applicable independence and other qualifications established by the NYSE rules and will be appointed to serve on such committees by the Board on the recommendation of the Nominating and Governance Committee. The Nominating and Governance Committee will also recommend a Chairman for each committee who will be principally responsible for administering the committee and ensuring compliance with the committee's applicable charter (as discussed below). Committee Chairman positions will be rotated or reassigned approximately every five years.

Each standing committee of the Board shall have its own charter setting forth the purpose, goals and responsibilities, the manner in which the committee is to function, and the qualifications required of its members. Each committee shall be required to perform an annual evaluation of its own performance.

The Board will also maintain an Executive Committee, and the Board, as well as its Committees, has the power to create other special purpose committees or subcommittees.

Meetings in Executive Session
In addition to regularly scheduled Committee meetings, the Board will also hold meetings in Executive Session, where only the outside directors participate. Employee directors will not participate. The independent directors will designate a Presiding Director who will serve as Chairman of meetings held in Executive Session. Among the topics that may be discussed in Executive Session are strategic direction and performance, financing and capitalization alternatives, management performance and evaluations, succession planning for the CEO and other key executives, and Board of Directors and Committee performance assessments.

Director Access to Officers and Employees
Members of the Board will have full and free access to officers and employees of the Company. Officers and other employees of the Company may be invited by the Chairman of the Board to attend and/or make presentations at meetings of the Board from time to time to further the Board's familiarity with management personnel and to discuss pertinent detail of agenda topics and any other aspects of overall operations that are of interest to members of the Board of the Company, as deemed appropriate.

Director Compensation
The form and amount of director compensation will be determined and reviewed from time to time by the Compensation Committee in accordance with its charter and applicable NYSE and other rules and guidelines. The Compensation Committee will consider whether a directors' independence may be jeopardized if the Company enters into consulting contracts with or otherwise provides any form of indirect compensation to a director or any organization with which such director is affiliated.

Succession Strategy
The Chief Executive Officer shall periodically discuss with the Board succession strategy planning for certain senior officers of the Company assessing senior managers and their potential to succeed the Chief Executive Officer and other senior management positions.

Director Orientation and Continuing Education
All new and continuing directors are encouraged to review orientation materials prepared by the Company. A Director Orientation meeting will be held within three months following any new director's appointment or election to the Board. This meeting will provide an understanding of the Company, its business, operations, and key personnel, and it may consist of management presentations and other reference materials, and programs describing the Company and its activities. Topics such as the following may be covered: markets, competitive position and strategies, significant financial, accounting and risk management issues, compliance programs and Code of Business Conduct and Ethics, key personnel of independent auditors and outside legal, financial and other advisory firms. In addition, Directors are encouraged to participate in continuing education programs.

Evaluation of the CEO
The Compensation Committee will conduct an annual review of the CEO's performance and compensation, as set forth in its charter, and will present its findings to the Board, which will consider the report of the Compensation Committee with a view toward ensuring that the CEO provides continuing leadership in a manner serving the best interests of the Company.

Annual Performance Evaluation
The Board will conduct an annual review of its own performance to assure that the duties of the Board as a whole continue to be discharged in a manner consistent with overall Board objectives, NYSE rules and other applicable rules and guidelines. The Presiding Director is charged with the responsibility of overseeing the Board evaluation program. The Board will discuss areas in which its performance may be improved and the actions which may be taken over the coming year to facilitate such improvement. In addition, each standing committee will evaluate and report on its performance in relationship to the responsibilities established in its charter.