Sub-Zero’s PRO Refrigeration is now available in two 36-in. models. The new units feature two separate cooling systems and three temperature zones so food can stay fresher longer, as well as a crisper drawer that provides a higher-humidity environment and NASA-inspired air purification to eliminate ethylene gas and remove bacteria, mold and viruses every 20 minutes. Enhanced LED lighting illuminates the cavity, and adjustable shelving and a sliding glass shelf offer greater storage flexibility. The refrigerators offer stainless-steel interiors and are available with a stainless-steel or glass door. MSRP is $13,965.