The Beverage Air 703-963D-03 New Style Refrigerator Door Gasket is designed to create a secure seal around compatible refrigerator doors, measuring 21 1/8" x 23" for proper fit. It works by compressing along the door frame when closed, preventing warm air from entering and keeping cold air contained inside the unit. This helps maintain consistent internal temperatures and reduces strain on the cooling system. Its flexible, durable construction supports easy installation and long-term use, helping improve energy efficiency, protect stored contents, and ensure reliable day-to-day refrigeration performance.