To fit: Delta 3Plus 110mm x 300p Z-fold x 5 All of our ECG paper, accessories and consumables are made from the highest quality materials to manufacturers own specifications. You can be sure of a clear trace, first time, every time. It is important to buy good quality ECG paper to avoid damage to the delicate thermal print heads, common to all ECG machines. Paper is supplied in rolls or flat z-fold packs