Edwards SD-PH Duct Superduct Protective HousingUse the SD PH Protective Housing when installing SuperDuct detectors in high humidity environments. The SD PH is a weatherized housing that prevents condensation on the device by insulating the detectors and providing circulated air from the monitored HVAC duct. The SD PH also adds a layer of protection against physical damage to the unit. The SD PH is easy to install and service. The hinged and transparent cover provides ready access to the detector,
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