Brother TN-421BK Black Toner Cartridge is a genuine Brother original toner designed for reliable printing in compatible laser printers.

This original Brother TN-421BK cartridge delivers crisp black prints with an approximate ISO/IEC 19798 yield of 3000 pages, making it a strong choice for small offices and home users who need consistent, high-quality monochrome output.

The cartridge is compatible with a range of Brother colour laser models including the HL-L8260CDW, HL-L8360CDW, DCP-L8410CDW, MFC-L8690CDW and MFC-L8900CDW. It ships as a single unit in a box and is easy to install for most users.

Measuring 183 mm wide, 140 mm deep and 343 mm high, and weighing 479 g (872 g in its packaging), the TN-421BK is compact and straightforward to store. The product colour is black and it is manufactured in China.

Typical use cases include everyday office documents, reports, invoices, and black-and-white marketing material where dependable text quality and page yield are important. Its original Brother design helps maintain printer performance and reduce the risk of smearing or feed issues.

For businesses managing stock, pallet and shipping details are provided: master cases per pallet layer 6, per pallet 30, with 5 layers per pallet for a total of 120 products per pallet. Pallet gross height is 16.3 cm and pallet gross weight 122.4 kg on an 800 x 1200 mm pallet.

Choosing the Brother TN-421BK ensures compatibility, predictable page yield and the support of an original-brand cartridge, which can reduce downtime and maintain print quality over long print runs.