Brother WT100CL (20,000 Page Yield) Waste Toner Unit for Brother DCP-9040/9042/9045, HL-4040/4050/4070, MFC-9440/9450/9840 Printers.Waste Toner Collector.Yield: 20000.Collects unused toner particles preventing staining.Yield approx 20,000 pages.Easy to...