A damp location is an interior location normally subject to dampness or condensation, or an exterior location protected from weather and not subject to saturation with water. Damp locations include over bathtubs, indoor pools, covered porches, and like locations.
New York City Approved
New York City has very specific codes regarding emergency lighting and signage. In short New York City approved exit signs must be Red 8 inch tall letters with a 1 inch stroke (line thickness) as opposed to 6 inch tall with a 3/4 inch stroke in typical exit signs.
Wet Location emergency lights and exit signs are weatherproof and designed to be used in outdoor environments, as well as indoor locations that are exposed to water and moisture. Wet location emergency lights and exit signs are extremely durable and long-lasting.