FC104T72FRK is UL fire rated in the United States and Canada. The FC104T72FRK has passed a fire resistance rating of up to three hours (rating varies by roof construction) and has been tested in accordance with UL Standard: Fire Testing of Building Materials and Construction, ANSI/UL263 (ASTM E119, NFPA 251). The FC104T72FRK is prefabricated and quickly assembled on site without any special tools or skills. The set includes a cabinet fiber kit, a UL-certified speaker/transformer assembly, and a UL-certified baffle selection. Each cabinet fiber kit includes pre-cut fiber panels, metal cabinet, rail kit, and hardware. The Atlas-Sound FR series offers a wide variety of aesthetic, cost and performance options. The 43 speaker/transformer combinations approved for use in FR arrays are FR versions of the industry-standard Atlas-Sound Strategy Series FA134, FA136, FA138 models and the C803A, C5A, C10A, and FC104 loudspeakers. Approved baffles are also FR versions of Atlas-Sound family models. To maintain the UL fire rating, cabinet fiber kits must be used with FR Series components.