The True 810800 3/8" Magnetic Door Gasket 21.5" x 31.25" functions as a premium replacement gasket for refrigeration units. The gasket uses durable flexible material which provides a tight seal to enhance both energy efficiency and temperature control. Its 3/8" thickness delivers better insulation performance which helps prevent temperature changes. https://partsfe.com/810800-true-gasket-door-21-12-x-31-14