The CMA-455 is designed to replace one 2' x 2' ceiling tile or to sit above the suspended ceiling. 2' x 2' plate is suspended and secured to the structure above with four tie wires. Features: Quick installation without cutting any ceiling tiles. Comes with 10 ft. safety cable, 20 ft. strand wire, two outlet knockouts, four turnbuckles, wood eye bolts and concrete anchors.