For small quantities, quick shipping, or standard sizes, major online marketplaces offer a wide variety of Expanded Polystyrene (EPS) and Extruded Polystyrene (XPS) products.
: Offers wholesale pricing on styrene sheets ranging from 1/2" to 4" thick for industrial and sporting goods applications. Polystyrene Foam | Foam Factory, Inc. where to buy polystyrene foam
: A specialty shop for hobbyists needing specific XPS foam for terrain building and architectural models. Specialty Foam Suppliers For small quantities, quick shipping, or standard sizes,