Mineral Fiber Core 250°F Temp Rise Door - Fuego Fire Doors /global/scaled/2619x1138x6x444x1000x435/Other-Ceco-Images-New door cores-FUEGO.jpg The Fuego 250˚F temperature-rise rated door will allow the unexposed side of the door to only reach a maximum of 250˚F during the first 30 minutes of the fire test. Fuego Fire DoorsFuego is designed specifically for openings, such as stairwells, requiring conformance to NFPA-80 or similar fire protection recommendations for maximum temperature rise requirements. Constructed with smooth, flush face sheets and neat hemmed edge seams (seamless available), it can be furnished for use with appropriate frame, hardware, and exit devices as required. 250˚F Temperature Rise Fire Doors Solid Mineral Fiber Core - Steel Glazing Trim UL, WH or FM label: classified for up to 3 hours Class A, B, C, D and E with 30 minute temperature rise of LESS than 250 degrees Fahrenheit. Maximum size: 20, 18, or 16 gauge steel face sheets Single: 4'0" x 8'0" Pair: 7'4" x 7'2" Pair: 8'0" x 8'0" (1-1/2 hour) Latch set: UL listed, minimum throw 1/2" (single) and 5/8" (pair) Classified for use with all labeled fire exit hardware. High recycled steel content for LEED points Tested and approved for use Internationally under BS476 Part 22, 1987 (British) and various independent Country fire tests for 30, 60, 120, and 240 minutes.