Boxes Fast offers a large variety of insulated cartons and shippers to choose from. Boxes Fast BF230C insulated shipping boxes with foam containers 12 x 12 x 11 1/2 inch (L x W x H) stay insulated to maintain the integrity of your product. These lightweight economical shipping kits are reusable and recyclable. Insulated shippers include a seamless molded EPS (expanded polystyrene) foam body, a tight fitting lid and a 200#/ect-32 White corrugated cardboard carton.