Description 20lb Prefold Xerographic Paper Our 20 lb Prefold Xerographic Paper with a 11″ fold is the perfect solution for seismic well log printing. Designed primarily for black and white printing, our 8.5″ x 500′ rolls of fan fold paper on 3″ cores are the premier line of seismic-well log media in the country. Plotter Paper Guys product number FX20B9F614RW includes 2 rolls per box. For optimal printing results, keep the following in mind: Core Spindle: Your printer must have a 3″ core spindle for proper media loading and alignment. Ink Compatibility: Your printer should support toner-based or aqueous inkjet systems. Compatible Printer Models: Works effectively with devices like HP Pagewide and Canon printers. Our paper is simple and effective. With free, next-business-day shipping on all US orders, you can rely on receiving your 20lb Prefold Xerographic Paper just in time. Rest assured that our high-quality materials are designed to meet rigorous standards, providing sharp, durable prints.