(a) Advertisements relating to alcoholic beverages shall only be displayed in the window of a licensed establishment if the total area covered by the advertisements does not exceed 25% of the window space. (b) Advertisements relating to alcoholic beverages shall not be displayed on the exterior of any window or on the exterior or interior of any door.
Advertisement on windows and doors of licensed establishment
D.C. Code § 25-765 — under Physical Space and Advertising..
D.C. Code § 25-765