Panasonic ET-ELT31 Tele Zoom Lens designed for use with Panasonic's PT-EZ590 series projectors. The lens makes it possible to vary the projection distance by changing the focal distance.
Compatible Models:PT-EZ590/EW650/EW550/EX620
Throw Ratio: 4.02-7.28:1, 4.34-7.86:1
Dimensions (WxHxD): 110 x 110x 214.5 mm