Outdoor enclosed directory board cabinet frames a 1 1/2" internal depth. Back panel is grooved black felt. Locking hinged doors protect items on display and prevent tampering. Comes with up to three doors with shatter-resistant clear acrylic panels. Cabinet should be mounted beneath overhang or in semi-enclosed space. Includes set of 300 letters, numbers, and punctuation marks. Additional letter sets available separately. TAA compliant.