Profile: Armstrong's Supply Co., Inc. specializes in electrical and lighting equipment. Our products include FireLine™ fire rated enclosures, 50 amp GFCI protected spa & swimming pool panel, Murray® stand-by power panel (generator panel), and Siemens® & Murray® arc fault circuit interrupters. Our FireLine™ fire rated enclosure is the single most flexible and effective solution for the fireproofing of recessed downlighting applications. This provides a one-hour UL® classification for L500 series floor & ceiling assemblies. This barrier helps to prevent the spread of heat & flames into the ceiling space. It is easy to install and flexible. Our arc-fault circuit interrupters is featured with short circuit protection & arc-fault detection, and UL listed. It is also available in 15 & 20 Amp plug-in breakers for residential use, and bolt-on for commercial panel boards.