Prevent condensation, mold and mildew from forming in your living space with the Rainer Precision Dri-Z-Air Pot. This dehumidifier uses calcium-chloride crystals, a form of salt, to draw out the extra humidity effortlessly and quietly. Empty only when all of the crystals have dissolved. Compact design with unobstructed 360 venting for superior airflow. Easy to use. Made in USA.6.3H x 5.8W x 5.8D.Available: Dri-Z-Air Pot, 13-oz. Refill, 26-oz. Refill.