Vastex E-20 LED Tabletop Screen Exposure Unit 20"x24"The entry level E 20 light box offers the same fast exposure times for producing high resolution half tones and crisp detail as higher end models Equipped with two 15" (38 cm) VLB 15 LED light bars, it comes with an analog timer for automatic shut off and a pressure plate to create tight glass positive screen contact. NOTE The glass exposure surface is not included and can be purchased separately from Vastex or supplied by the customer. This tabletop