Displays2go Illuminated Backlit Poster Light Box Frame for 18 x 24 Prints Holds (1) 18 x 24 poster in either portrait or landscape. LED bulbs last longer than tradtional fluorescent lights and are more energy efficient. Hinged, snap-open framing allows for effortless updating of graphics while the frame remains in place on the wall. Pre-drilled holes allow for effortless installation in either portrait or landscape orientation. Dimensions: Overall: 18.75" x 24.75" x 0.83"