0.75 - 0.95:1 throw ratio, offers big image flexibility even in smaller spaces Designed for the Optoma ZU1300, ZU1100, ZU1050, ZU860, ZU750 and ZU660e DuraCore laser projectors 1.26x Motorized Zoom provides additional flexibility for easy install Interchangeable lens with zoom ideal for immersive installations and much more The BX-CTA15 short throw lens is ideal for immersive installations and other small-space installs. With a throw ratio of 0.75 0.95:1 and a 1.26x Motorized zoom, easily produce images in size of 50" up to 1000