Aquatic Technology 7503WA1218E 12x18" White Please Shower Before Enrering Pool Sign measures 12 x 18 inches, is printed on heavy-duty aluminum material and is designed to prevent patrons from entering the pool area without showering first. It is a safety code requirement to shower prior to entering a public pool or spa. Our general information signs are very noticeable and used to inform people of facility restrictions, policy, object location or instruction. This sign is lightweight, durable, and waterproof for indoor or outdoor use.