DESC: The ClimateKeeper System featured on the PTS22SHSSS combines an air tower, electronic sensors and electronic touch controls to keep temperatures consistent and help preserve refrigerator contents. Another important feature is the FrostGuard Technology which reduces defrosting to protect frozen items from freezer burn, monitoring door openings and defrosting only when needed. Other features include upfront electronic digital display, factory-installed icemaker and slide-out spillproof glass shelves.