The exit signs in this list satisfy the building codes throughout the entirety of the United States with these two exceptions: New York City's 5 boroughs and Chicago. For the New York City Approved selection of exit signs, please see the category titled New York Approved. For Chicago approved signs, we will be releasing the new line soon. As for the products below, they are all tested and certified to Underwriter's Laboratory specification UL924, which is the certification your Fire and Building Inspector will require. Your inspector will approve these signs if you install them according to their intended application. What are the intended applications? They are just as you may expect, such as don't install an indoor-rated sign outdoors. Our signs are designed to work in specific applications, such as indoor, outdoors, wet areas, icy areas, areas where electricity is not present, or where chemicals or fumes are present. Our descriptions give strong clues about the sign's application. If in doubt, call us. We can answer your questions immediately. Or, click on the signs and read their specifications. We cover the ratings and specifications of our signs in great detail. Our collection addresses every type of need you will encounter. We're here to help. Thank you for taking your time to read this.