From Lightolier comes this Non-IC new construction recessed housing. The frame-in kit is designed for mounting prior to ceiling installtion. A thermal cut out insures against overheating due to incorrect lamping. The low voltage housing includes a magnetic transformer. To be used with Lightolier recessed light trims. New Construction. Low Voltage. Requires 3" spacing from insulation. 12 1/4" wide. 5 3/4" high. 3 3/4" ceiling cut out.