This guard is designed to protect drains from unwanted fat, oil, and grease. Simply put the trap into the kitchen sink drain and pour the oil directly from the pan into the center. Once cooled, this drain is easily disposed of in the trash. Because this is not a strainer, if left in the sink drain with the water running, the Grease Hero will not work and falls apart. Application Type: Kitchen sink drain Material: Paper Pulp Overall: 5.5'' W x 5.5'' D Overall Height - Top to Bottom: 2.5''