EKG paper from MediChoice comes in a range of sizes and configurations, including this 3-channel Z-fold, thermal red grid paper with header, which measures 215 millimeters by 280 millimeters. The shelf life of this and our other unimaged premium-grade thermal paper is five years when properly stored in original packaging, in darkness, and below 77 degrees Fahrenheit and 65 percent humidity. Once the paper has been imaged, the image is expected to last five years. The paper is made in America and is designed to provide consistent trace quality. MediChoice is Owens & Minor's brand of medical-surgical products and durable medical equipment that is expanding to meet the changing needs of healthcare. MediChoice, your choice for quality, value and unmatched service. Search MediChoice for additional product offerings.