Manufactured to OEM specifications and guaranteed to work efficiently in your thermal print machine. Provides high-quality output with crisp black images. Size: 3 1/8" x 230 ft; Paper Color(s): White; Paper Weight: 12 lbs.. Includes 10 rolls. Elemental Chlorine Free applies to paper processed without elemental chlorine, but with a chlorine derivative known as chlorine dioxide. ECF papers meet EPA regulations for bleaching.