On this page, you will find a selection of 16:10 Wide Screen Format lenses for most current EIKI projector models. To get the Throw to Width Factor (T/W), divide your Throw distance by your screen Width to get your "target T/W number". Then look for a lens with a T/W in that target range. These calculations are from the front glass of the lens and accurate to approximately +/- 3%. All EIKI Wide Screen Format lenses sold on this website are brand NEW and ship directly from EIKI's USA Headquarters in Rancho Santa Margarita, CA.