Precision-grooved changeable letter back panels are covered with either felt for indoor models or vinyl for outdoor units. Letter panels are available in black or burgundy. Lockable hinged doors, with shatter-resistant acrylic, help make these wall mounted units a popular choice for schools, churches, hospitals and fraternal organizations. Headliners include a 6" high white acrylic header panel to clearly identify your organization’s name for all to see. Standard lettering on header is done in uppercase and lowercase, helvetica-style black letters and is sized and centered on the opaque panel depending on requested name. Available with an illuminated or non-lighted acrylic panel. Illuminated units feature U.L. Listed fluorescent fixture, bulbs and a three wire electrical lead. These durable aluminum framed units can be ordered for either indoor or outdoor models. Select from your choice of bronze or satin anodized aluminum. A set of 3/4" letters, numbers and characters is included. Interior depth 7/8". Overall depth 2-1/4". Outdoor models should be placed under an awning or overhang.