The eMac was an all-in-one G4-based Mac designed for the education market and released in April 2002. It was the last Mac to use a CRT display and was sold at a low price to schools and other institutions.
Sorry for the necro, but for those wondering, it's not. However, it is recommended you have the access panel so the computer will sit on a table properly (even if you have the tilt and swivel stand).