Automatic double-sided printing is standard, as are the integrated energy-saving modes that support Epeat Silver and Energy Star Certified ratings. The Lexmark Cartridge Return Program and the Lexmark Equipment Collection Program minimize waste and support recycling. The business-class MS431dn is only 222 mm high, 368 mm wide, and 363 mm deep, making it fit almost anywhere. Its compact size and lightweight design make it easy to set up and transport. In addition to delivering the first page in just 5.9 seconds and a print speed of up to 40 pages per minute, the Unison toner with extra high capacity offers a yield of up to 20,000 pages. Add an optional paper tray to increase the total input capacity to up to 900 sheets – for more printing and less downtime.