Presentation cart holds all equipment on three sturdy shelves that adjust in 1-1/4" increments. Handy unit moves on heavy-duty 3" casters (two locking) for easier movement between rooms. Grommets keep cables managed between shelves. Top shelf measures 18" wide x 16" deep. Laptop shelf measures 18" wide x 14" deep, and bottom shelf measures 18" wide x 18" deep. Optional electrical assembly (sold separately) includes four UL-CSA approved outlets, 25' cord and cord winder. Tops are gray, and the frame is black.