The Extension Column Connector from Peerless-AV allows you to join two 1.5" schedule 40 Peerless-AV EXT series extension columns, supporting a total extension of up to 20'. Providing universal female threading at each end, the connector is constructed with durable carbon steel tubing and finished with fused epoxy. The connector supports a display, projector, or other loads weighing up to 1200 lb.