Panasonic E-, F-Series projectors are projectors for permanent installation in conference, meeting or meeting rooms. These projectors are usually brighter than conventional home cinema projectors. Many models also use interchangeable lenses.
Panasonic Installation Projector Product Series guide
Models with the EZ designation have WUXGA (1,920 x 1,200) image resolution
EW models have WXGA (1,280 x 800) image resolution