Despite your Xerox 108R00982 printers best efforts, it simply cannot fuse every grain of toner powder to paper, and this toner powder has to go somewhere. The original 108R00982 waste toner collection unit is Xerox`s solution to this.The majority of the leftover toner powder within your Xerox Phaser 7800 (and all other compatible printers) is funneled off to one side and packed into this 108R00982 collection box. The genuine Xerox 108R00982 waste toner collection bottle is essential in keeping your printer pristine and ensuring the very longest life from this important part of your office.