Many fresh foods emit ethylene gas, a naturally-occurring compound that hastens food ripening and spoilage. 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.Sub-Zero’s microprocessor controls the interior temperature to within one degree of its setpoint. An advanced air seal around all four sides of the door prevents leaks while conserving energy.Monitor and Control with WiFiMonitor and control remotely with Wi-Fi connectivityAccepts Custom PanelsAccepts custom panels for an integrated look within cabinetry or stainless-steel accessory panels and handles to match other Sub-Zero, Wolf, and Cove productsPreserves Refrigerated FoodPreserves refrigerated foods with cool, moist airCreates a Seamless LookCreates a seamless look with single door design in your kitchenControls TemperatureControls temperature within one degree of setpointLocks in Cold Air With Magnetic SystemLocks in cold air with a magnetic door seal systemFight spoilageFight spoilage and odors with a NASA-inspired air purification systemFilters WaterFilters water, removing contaminants, chlorine taste, and odorDelivers Fresh Water – InternalDelivers fresh, filtered water through an internal dispenser designed to discreetly rest within the refrigeratorKeeps Produce FresherKeeps produce fresher with high-humidity, sealed crisper and deli drawersRefer to Freshness CardsRefer to freshness cards for tips on food preservation, use, and carePromotes Easy Clean UpPromotes easy clean-up with Nano-coated, spill-proof shelvesControl BrightnessControl brightness with soft-on LED lighting Refrigerator Specifications LED refrigerator and freezer lights 3 adjustable glass shelves 2 soft-close crisper drawers with adjustable dividers 1 deli drawer with adjustable dividers 5 door bins (3 adjustable; 2 stationary) 1 adjustable dairy compartment Internal water dispenser