Fla. Stat. § 48.091

(1) Every Florida corporation and every foreign corporation now qualified or hereafter qualifying to transact business in this state shall designate a registered agent and registered office in accordance with chapter 607.

(2) Every corporation shall keep the registered office open from 10 a.m. to 12 noon each day except Saturdays, Sundays, and legal holidays, and shall keep one or more registered agents on whom process may be served at the office during these hours. The corporation shall keep a sign posted in the office in some conspicuous place designating the name of the corporation and the name of its registered agent on whom process may be served.