ASI Doors manufactures specialty industrial and commercial door systems, including UL certified fire-rated sliding and swinging doors for cold storage, food processing and clean environments. Its ISO-Slide 1200F is a UL certified fire-rated insulated sliding door, and the ISO-Swing 220 is available in a fire-rated configuration. Products are engineered and made in the United States at the firm’s Milwaukee plant, and sold through a national dealer and installer network.