Metal Open Trim Ring for 5 Inch Ceiling R30 PAR 30 Recessed Light Can - White METAL OPEN TRIM FOR 5 INCH CEILING LIGHT CAN - White Fits R30, PAR30 AND SAME SIZE COMPACT FLUORESCENT AND LED BULBS. 75W MAX INNER DIAMETER OF RING : 4 INCH OUTER DIAMETER OF RING : 6-1/4 INCH FITS IN 5" RECESSED CANS: ELCO AND ALL SIMILAR TYPE BRANDS