Traulsen VPS90S Venturi Plenum System (VPS) pizza prep table is designed to keep all foods fresh within NSF Standard 7 guidelines. Both high fat and high water content products are maintained equally well, at even temperatures, without freezing. The VPS system accomplishes this through the use of ducted air, which surrounds the product pans with cold air, both top to bottom and on all sides, without drying the ingredients. This provides for better product appearance and extended shelf life, while eliminating the need to stir products or rotate pans.