Compatible replacement for Brother TN3520. Page Yield or Volume @ 5% coverage will be approx 20000. This is a Laser Toners. Prices exclude VAT and delivery. All products are covered by a 2 year warranty and next day replacement service. Name and numbers are for indicative purposes only. All products are non-original/non-OEM. FITS: HL-L6400DW, HL-L6400DWT, MFC-L6900DW, MFC-L6900DWT