Classic (Built In) The brand that pioneered built-in refrigeration now gives you more aesthetic and functional choices than ever. Sleek clean designs, exceptional materials and that unmistakable louvred grille. Our built-in units come in many configurations and a wide variety of sizes but they all make a statement. Whether you choose our trademark stainless steel doors or custom panels to match surrounding cabinetry, Sub-Zero's Built-in models are perfectly at home in traditional or contemporary designs. Optional stainless steel panels are available for each model, to create a freestanding look. As the innovators of food preservation, Sub-Zero offers a unique ‘Air Purification’ system in their New Generation Integrated and Built-In refrigeration lines, which removes harmful gases and odours; a process that was developed initially for NASA to aid food preservation. Additionally, the Dual Compressor system, standard on all Sub-Zero fridge/freezers, is a completely unique feature to Sub-Zero. The separate compressors within the fridge and freezer sections enable each compartment to operate independently meaning that odour and flavour transference is prevented to stop your ice-cubes tasting of fish! This exclusive function prevents temperature fluctuations, saves valuable energy and is proven to keep food fresher for longer. Sub-Zero Classic Refrigeration