Versico’s InsulFoam FL (Flute-Fill) is a custom-made, engineered insulation consisting of a superior closed cell, lightweight expanded polystyrene (EPS). InsulFoam FL is manufactured to meet or exceed the requirements of ASTM C578 Standard Specification for rigid, cellular polystyrene thermal insulation. InsulFoam FL can be manufactured in a range of sizes, densities, thicknesses and profiles to meet any job-specific needs.