Whirlpool 4.3 cu ft Ventless Heat Pump Stackable Electric Dryer White Pressure Vacuum Breaker optional cover plate Item Weight:.625 optional cover plate (128 mm) center to center hole spacing 3 Safety Listing UL safety listing Size Medium (4 making it our most space saving design available Our most efficient compact dryer technology uses a ventless heat pump design to take the next step in energy efficiency it recycles air and captures moisture so you can enjoy a more efficient and perfect drying experience Wrinkle Shield™ option help prevent wrinkles on a hectic schedule it intermittent tumbling helps keep wrinkles from setting into clean clothes for up to 12 hours after the cycle ends Refresh your load using the refresh cycle