Ohio Rev. Code Ann. § 3937.25
(B) After a policy of commercial property insurance, commercial fire insurance, or commercial casualty insurance other than fidelity or surety bonds, medical malpractice insurance, and automobile insurance as defined in section 3937.30 of the Revised Code, has been in effect for more than ninety days, a notice of cancellation for such policy shall not be issued by any licensed insurer unless it is based on one of the following grounds:
(C) The notice of cancellation required by this section must be in writing, be mailed to the insured at the insured's last known address, and contain all of the following:
(D)
(2)