Downlighting Recessed Lighting Trims: Type - Recessed Downlight; Nominal Aperture - 4 in Round; Trim Style - Reflector, Cone; Trim/Ring Finish - Chrome/White; Lamp - Incandescent - 50PAR20; Lamp - HID - 39W PAR20CMH; Trim OD - 5.00" (127mm); Housing - 501X, 502X, 502AICX, 501MH, 502MH; Manufacturer Series - Lytecaster