[Brother Genuine] Drum Unit DR299CL 4PK (4-pack of drums) Compatible models: HL-L3240CDW, MFC-L3780CDW, etc.

Brand: Brother Industries Printable Pages: Approximately 20,000 pages (when printing 1 page at a time) Brother genuine drums are developed through extensive research to ensure optimal performance of the printer. Please note that using non-genuine drums may not only prevent the printer from performing optimally but may also damage the printer. *4-drum pack, all drums measure 293.3 x 105 x 53.6 mm