LxTeK 3 Pack Compatible with 137 Toner Cartridge LxTek compatible toner cartridge replacements for Canon 137 have been awarded ISO9001 certification, and we have independent laboratories periodically verify product quality to ensure a smooth user experience. Page Yield: 2,400 pages per toner cartridge at 5% coverage Compatible Printers: Canon ImageClass LBP151dw, ImageClass MF236n, ImageClass MF247dw, ImageClass MF244dw, ImageClass MF249dw, ImageClass MF216N, ImageClass MF227DW, ImageClass MF229DW, ImageClass MF212W, ImageClass MF217W, ImageClass MF222DW, ImageClass MF211, ImageClass MF232W, ImageClass D570 Printer Package Contents: 3 Pack (3 Black) compatible Canon 137 toner cartridges Guarantee: 1-year limited warranty / Shelf life: 18-24 months