Sentinel Series Integrated Humidifier for Models D050, D088, D200, DP50, DP88, DP200, DS050, DS088, DS200, SP50, SP88, SP200Description Integrated Wine Guardian humidifiers add moisture to the air at the wine cellar cooling system rather than directly in the wine space. These humidifier units attach directly to either side of Wine Guardian ducted or ducted split cooling systems. Suggested humidity maximum humidity is 60% relative humidity. To achieve relative humidity above 60% relative humidity, we recommend using a Wine Guardian Freestanding Humidifier, which installs