Smokegard Duo Centric Chamber Model 800A8; US Patent 3,899,732, other patents pending; Install per owner's manual LC5184 and NPFA 74; BOCA 75-35.
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Statitrol Corporation, "Statitrol/Emerson Smokegard Duo Centric Chamber Model 800A8 - front" (1978). MS055-08-0001 - 0003 images. 14.
small business, smoke detectors, fire protection, fire safety