Thermoformable Foam Sheets - Polyurethane Foam Board | General Plastics
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Thermoformable Foam


General Plastics’ LAST-A-FOAM® FR-4300 thermoformable foam sheet series is a unique low density, flame-retardant structural polyurethane foam. It is ideal for composite panel cores and other structures where compound-curved surfaces or other details can be made with low-cost heat-forming methods. While it is heat-formable, it retains all the chemical and solvent-resistant properties of polyurethane foam boards. A closed-cell material, it is easily bonded and will accept a variety of adhesives and coatings. This series is non-abrasive and can be machined with standard high-speed steel (HSS) cutting tools. It can also be cut cleanly with water jets and traditional wood-carving tools.


  • Retains polyurethane foam’s chemical and solvent properties under heat
  • Accommodates low-cost heat-forming methods
  • Bonds easily
  • Accepts variety of adhesives and coatings
  • Max use temperature of 200°F (93°C)
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ProductsDensity (lbs/ft3)Height (in)Width (in)Length (in)Request a Quote
FR-430552448120Quote »
FR-43055244896Quote »
FR-431515244896Quote »
ProductsDensity (lbs/ft3)Height (cm)Width (cm)Length (cm)Request a Quote
FR-43058061122305Quote »
FR-43058061122244Quote »
FR-431524061122244Quote »

Shown are maximum standard stock based on density. Custom sizes are available. Cut sizes are available from 0.125 inches (3.175mm) up to standard stock heights as listed above

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