Description General description Choose from two rack models; one stores two levels of trays to support taller vessels like tissue culture flasks, the other stores four levels of trays for shorter containers like dishes and plates. All racks interlock upon stacking for a small, space-saving footprint that holds up to 20 levels of trays. Every level supports one large or two small interchangeable trays, that are purchased separately. Air flows through perforations in the trays and every part is fabricated of stainless steel and is steam sterilizable at 121 °C (250 °F). Racks and trays sold separately. • Versatile configurations to accommodate many types of media plates and flasks • Autoclavable Legal Information Stak-A-Tray is a trademark of SP Scienceware, a division of SP