A through-wall air transfer module TWATM will assure a constant flow of indoor air into a zone which may be highly occupied and experiencing undesirable increases in carbon dioxide and moisture from human respiration. TWAT Modules typically move only about 75-100 cubic feet per minute of air from a hallway and into a bedroom or bathroom. the modules are very quiet and require only 10 watts or less. It is not unusual that a clothing closet may experience mold issues.due to a buildup of moisture and a lack of air movement. Mold likes very quiet and moist air. A TWATM can provide dry air and air movement into a closet which will terminate molding or mold activity in a clothing closet. A variable speed electronically commutated motor operates from a 12dc plug-in power supply.