Epson's Middle-Throw #2 Zoom Lens (ELPLM13) is an interchangeable lens that works with the Pro L25000 Projector.
F Number: 1.9 - 2.4 Throw Ratio (200" Screen): 2.3 - 3.46 Lens Shift: V= +65%, H= +/-30%
https://epson.com/Accessories/Projector-Accessories/Middle-Throw-%232-Zoom-Lens-%28ELPLM13%29/p/V12H004M0D