Keep your Brother printer operating cleanly and reliably with this replacement waste toner box, rated for up to 50,000 pages During operation of your printer, some toner is shed from the page and imaging assembly Rather than clog up your printer, this excess toner is diverted into a waste toner box for safe storage, ensuring your printer can operate smoothly and efficiently Make sure to replace the waste toner box regularly to ensure your printer stays in top condition This unit is designed for use in Brother DCP-L8400DN, HL-L8250CDN, HL-L9200CDWT, MFC-L8850CDW, DCP-L8450CDW, HL8350CDW, MFC-L8650CDW and MFC-L9550CDWT machines