Epson's Short-Throw Zoom Lens (ELPLU05) is an interchangeable lens that works with the Pro L25000 Projector.
F Number: 2.4 - 2.6 Throw Ratio: 0.91 - 1.09 Lens Shift: V= +55%, H= +/-25%
https://epson.com/Accessories/Projector-Accessories/Short-Throw-Zoom-Lens-%28ELPLU05%29/p/V12H004U05