Manufacturer of rigid unfaced polyiso (polyurethane) foam. Produce ELFOAM® blocks, sheets & fabricated shapes in densities between 2 and 6 lbs/ft3. Operating temperature range: -297°F to +300°F. Class I flammability rating. Thicknesses from 1/8” to 24”. Applications include commercial/industrial thermal insulation, fire resistant or composite core materials, and carving blanks.