The ELPMB57 stacking and rigging frame* by LANG is the perfect partner to the Epson Pro L20000UNL and Pro L12000QNL projectors, protecting the projector during transport and making it easier to handle during the installation process. With a convenient design engineered for optimum functionality, the ELPMB57 features tilt, horizontal and vertical adjustments. And, it allows installers to easily stack the projectors.