The CMA504 provides a convenient location for two outlets to power your flat panel, projector or other related equipment in ceiling mount installations. - Also functions as a great location for terminating multiple low-voltage connections - Quick and easy installation - Compatible with 1.5" NPT extension columns - Route high voltage wiring through center of extension column into box for a clean looking installation - Available as single or dual gang solution - Provides power access at installation point, great for drop ceilings