Expanded Polystyrene Foam Sheets, 1/2" x 24" x 48", qty 8 1 lb density Expanded Polystyrene foam Oversized packages, low actual weight, but UPS calculates dimensional weight of approximately 30-35 lbs These items are subject to special shipping considerations due to size and weight. Estimated $50 shipping cost per box! Expanded Polystyrene (EPS) foam insulation is used in home, art, packaging & construction