Preserve fruits and vegetables in this 42-inch Sub-Zero Classic French-door refrigerator. The NASA-inspired antimicrobial air purification system fights ethylene gas and odor-causing microorganisms, while the dual-refrigeration system maintains optimal humidity to extend food shelf life. This Sub-Zero Classic French-door refrigerator is built with premium-grade materials for long-lasting use, and an advanced air seal around the door prevents leaks.