This is a brand new box protector for the game Qix released on Atari 400/800/1200XL. The protector is made of extra thick plastic and features locking tabs. The protector measures 196x25x268mm.
It may fit other Atari 400/800/1200XL games however I always recommend measuring your box before ordering. The pictured game is not included and is shown for illustrative purposes only.
These are not made by Atari and the Atari 400/800/1200XL name is used under the Fair Use Doctrine to allow adequate description of the function of the product.