Shippers are light weight and can be reused. Cartons are printed with Rush, Perishable and This Side Up arrows shipping instructions. Inside Dimensions: 4-1/2" 3. Outside Dimensions: 8-1/2" 7" 5-7/8". Includes 1" thick seamless molded EPS foam body, tight-fitting lid, and a pre-assemble 32 ECT test corrugated carton. Reliable for maintaining the insulation and integrity of your product. Allows products with unique shipping difficulties due to temperature constraints to be shipped easily. Economical shippers are lightweight, reusable and recyclable. 24/Case. Maintains the insulation and integrity of your products that present temperature constraints.