The Dock Seal Draft Blocker is ideal for blocking drafts between dock seals and dock levelers. Design features include vinyl construction for durability, a weighted base for effective sealing, top carrying handles for easy portability, a foam-filled interior for compressibility, and an air vent to reform the blocker back into its original shape. Features: The design blocks drafts between dock seals and the dock leveler. The weighted base provides sealing action. Specifications: Size 24. Country of Origin: United States. Weight: 10 lbs.