Dual refrigeration ® provides the ideal humid yet chilly conditions for fresh foods, along with dry, frigid air for frozen foods. Sub-Zero refrigerators come with an air purification system (based on technology developed by NASA) that scrubs the air of ethylene and odor every 20 minutes. And, the unit is ready to be fitted with stainless steel panels or custom panels and handles for seamless installation with surrounding cabinetry. Only you, your family and the blueberries will know it’s there. True to Sub-Zero's pioneering food preservation heritage, the DET3050FI gives your frozen and convenience foods exactly the dry, frigid climate they need, so they stay fresher without freezer burn. An advanced water filtration system reduces pollutants, chlorine taste and odors. The ice maker includes a “max ice” feature capable of increasing production by an average of 30 percent for a 24-hour period. And as a designer unit, it comes ready to be fitted with stainless steel panels or custom cabinetry panels that allow it to virtually disappear into your décor.