Da-Lite > Product Information > Product Catalog > Monitor Mounts > Advance Center Support   Advance Center Support Product PDF   Provides additional monitor support on wall mount yoke (WMY) and ceiling mount yoke (CMY) models. Must be used when attaching VCR mount to CMY-3140. CS-2134 CS-3140   For pricing information, please contact Media Fabricators, Inc. via e-mail at [email protected] or via telephone at 323 937 3344.