The ACC-560 ceiling plate is specifically designed for Peerless' flat panel, CRT and projector ceiling mounts. It features: A low-profile design, perfect for small flat panel and projector installations. 1.5' 11.5 NPT threaded fittings for extension column attachment. 12-gauge, cold-rolled steel construction. A scratch-resistant, black, fused epoxy finish. 50 pound weight capacity. Easy attachment on wood joist or structural ceilings.**Click on the last image above for detailed dimensions.