Brother BU330CL belt unit is a replacement consumable for compatible Brother laser printers. It helps transfer toner during printing and is designed to work within the printer’s imaging system.
The approximate yield is 50,000 pages at one page per job, or 130,000 pages at three pages per job. Actual yield can vary with the paper type and size. Compatible models include Brother HL-L8360CDW and MFC-L8900CDW. Brother also describes the unit as designed to work with its toner, drum and waste toner box as part of a complete printing system.