Trymer® 2000XP insulation is a closed-cell insulation that features improved dimensional stability over a wider range of temperatures than standard polyurethane insulation. Trymer 2000XP insulation is polyurethane modified polyisocyanurate (PIR) cellular plastic. The rigid insulation is supplied in the form of bunstock for fabrication into sheets, pipe shells, tank and vessel coverings, and other shapes for a variety of thermal insulation applications. Trymer insulation is not a known nutrient source for mold and mildew.