Quest - 70 Overhead DehumidifierOverview The Quest 70 Overhead Dehumidifier helps growers control humidity in unconditioned and compact commercial spaces. It's a premium unit, which helps you remove humid air from specific areas. The product moves humid and stagnant air and flushes in clean and dry outside air. You can use the product in grow rooms and dry rooms. It prevents damage to a variety of structures and protects your plants from mildew, mould, and rot. The unit is excellent