NICOR Lighting 4 inch White Drop Opal Shower Trim, for 4 inch Housings (19510WH)

Requires one R20 or PAR20 bulb rated up to 50-Watts Max. (not included) | Designed to fit 4-inch recessed housings | Trim measures 5-inches in diameter with a 3.5-inch aperture | Includes Tension Clips for a Fast and Secure Installation | Comes ready to install. No extra parts required.