Lennox 21Z11 Smoke Detector kit 323613-751 Industrial Build: Sleeve bearing design

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Lennox 21Z11 Smoke Detector kit 323613-751 Industrial Build: Sleeve bearing designThe Lennox 21Z11 is a professional grade duct smoke detector kit engineered for seamless integration with commercial and light commercial air handling units. This HVAC smoke detection kit is critical for life safety compliance, providing rapid identification of combustion particulates within the supply or return air streams. Designed specifically for Lennox equipment, the 21Z11 interfaces directly with HVAC safety circuits and system control boards to