The Rubbermaid Commercial Space Saving Food Storage Containers keep food fresh, organized, and ready-to-use. Featuring easy-to-read graduated measurements in blue for liters and red for quarts, these plastic food storage containers make it easy to measure contents. Because we believe the best food storage containers use space efficiently, we've designed these plastic containers with a square shape that offers 25% more storage capacity than round containers. Constructed of break-resistant polycarbonate, they have a temperature range of -40° to 212°F making them perfect for everything from freezer storage to sous vide cooking. Commercial dishwasher safe, they feature durable handles with drain holes for proper washing and drying. Certified for food contact, assist in complying with HACCP guidelines.