The PBL-2647 combines the PBL-UMS universal projector mount for projectors up to 40 lb. with the APL-2647 extension adapter. The APL-2647 replaces the PBL-UMS’s included extension column to offer additional drop distance up to 47 in. The PBL-UMS offers flexible projector positioning with four patented dual-joint support arms (US Patent number 7,942,375) that can reach almost any mounting point on a projector. It features an adjustable height extension channel and a versatile ceiling plate that can mount to traditional or vaulted ceilings. The quick release connector allows the projector to be installed quickly and then easily released for maintenance, without re-alignment.