Brother Genuine DR920 Drum Unit delivers professional monochrome laser output with an approximate 45,000-page yield (Approximately 45,000 pages based on 1 page per job and 75,000 pages based on 3 pages/job (letter/A4 simplex pages). The number of pages may be affected by a variety of factors including but not limited to media type and media size). All Brother Genuine Supplies are designed as part of a complete printing system to provide superior quality and reliability. Use only Brother Genuine drums for reliable, business quality results.