If you want to keep your AcuLaser C3900 or CX37DN laser printer working at full capacity, you need to make sure that it is properly maintained. Waste toner can build up within your printer and cause damage to your machine. Make sure that you have this Epson waste toner bottle to ensure that your printing can continue at a high level of quality. The bottle is easily installed into your printer, meaning that you can print straight away. This consumable can store waste toner from up to 36,000 monochrome pages or 9,000 colour pages.