The smoke-rated sliding ICU systems are available in multiple configurations with concealed high-temperature gaskets or brush designs. The systems may be designed with track or trackless bottoms and partial or full breakout configurations. Self-closing options are available along with mini-blind glass and/or fire-rated panels. The doors comes standard with a UL 1784 label applied at the factory that certifies that the systems exceed the air infiltration requirements of NFPA 105.