The Rubbermaid Replacement Lid 306 L 1 is a round, push-down lid made of red plastic. It is designed to fit a 4 1/2" diameter container. This set includes one lid, perfect for replacing a missing or damaged lid on a Rubbermaid food storage container. With its durable material and precise fit, this Replacement Lid ensures a secure seal to keep your food fresh for longer periods of time.