Thermally Protected 4" 12 volt can. This can is for new construction only and can come in contact directly w/ insulation. The housing is airtight which will save on energy consumption. Accepts all 4" low voltage trims. Has a unique flexible support spring for easy installation. Listed UL Damp Locations and UL Feed Through. Uses 12 volt MR-16 bulbs up to 50 watts. Also uses a Type H Transformer. The unit is 7-1/2" high