The Barco GC 1.02-1.36:1 Projector Zoom Lens is designed for use with the G100-W16 G100-W19 and G100-W22 WUXGA single-chip laser phosphor projectors. This lens has a 1.02-1.36:1 throw ratio and is capable of filling a 25' screen from 25.5 to 34' away....