Paper Unlimited's 92 bright, 20 lb. Xerographic Prefold Paper with a 6.25" fold is the pro's choice for oil and gas printing applications. Designed to print primarily in black and white, our 11" X 500' flat pack of 6.25 inch fold paper is the premier line of seismic-well log media in the country. Paper Unlimited product number FX20B11F614P includes 2 flat packs per package.