Roth Distributing Sub-Zero 36" Built-In Bottom Freezer Refrigerator Right Hinge Panel Ready. Technology pioneered by Sub-Zero features two separate cooling systems so fresh food stays fresher longer in the cool moist air of the refrigerator. Frigid dry air prevents frost and freezer burn in the freezeroptimum preservation conditions for each type of food. Many fresh foods emit ethylene gas a natural compound that hastens spoilage. Sub-Zero's refrigerators come with an anti-microbial air purification system (based on technology developed by NASA) that scrubs the air of ethylene as well as mold viruses and bacteria every 20 minutes. Sub-Zeros microprocessor controls the interior temperature to within one degree of its set point. An advanced air seal around all four sides of the door prevents leaks while conserving energy. Built with premium-grade materials Sub-Zero products are designed to last a minimum of 20 years. Major components are subjected to extreme stress tests prior to going into the final design and every major function is tested before shipping. Dimensions: 36"W x 84"H x 24"D.