The 2013 21.5″ iMac Desktop Computer from Apple is an all-in-one desktop computer with an ultra-slim unibody design. Measuring at just 5mm at its edges, the iMac has 40% less volume than the 2011 iMac. The body of the iMac isn’t the only thing that got thinner. The LCD display is now 5mm thinner, and Apple also removed a 2mm gap between the LCD
This model has a 21.5″ 1920×1080 LED-backlit 16:9 widescreen IPS display with the “cover glass fully laminated to the LCD and anti-reflective coating.” The rear of the case is aluminum and is thicker in the middle and tapers to a razor thin 5 mm at the edges.