NEMA LE 7-2015 Recessed Luminaires Intended for Contact with Expanding Polyurethane Foam Insulation defines subset of insulation contact (Type IC) luminaires appropriate for use with polyurethane spray foam. Available for downloaded and in hard copy, this standard also provides requirements and recommendations for Type IC recessed luminaires intended for installation in contact with low- and medium-density polyurethane foam thermal insulation.