<Page> Exhibit 16 Office of the Chief Accountant Securities and Exchange Commission 450 Fifth Street, N.W. Washington, D.C. 20549 May 6, 2002 Dear Sir/Madam: We have read Item 4 included in the Form 8-K, dated May 1, 2002, of Carlisle Companies Incorporated to be filed with the Securities and Exchange Commission and are in agreement with the statements contained herein. Very truly yours, /s/ Arthur Andersen LLP - ------------------------- ARTHUR ANDERSEN LLP Copy to: Mr. Kirk F. Vincent Vice President and Chief Financial Officer Carlisle Companies Incorporated