Epson's Long-Throw Zoom #1 Lens (ELPLL09) is an interchangeable lens that works with the Pro L25000 Projector.
F Number: 2.1 - 2.6 Throw Ratio (200" Screen): 4.79 - 7.20 Lens Shift: V= +55%, H= +/-25%
https://epson.com/Accessories/Projector-Accessories/Long-Throw-Zoom-%231-Lens-%28ELPLL09%29/p/V12H004L09