Juno Lighting 17B-WH 4-Inch Recessed Trim, Black Alzak with White Trim,Juno Lighting Group,17 BWH" /> Juno 4-inch incandescent black alzak cone with 5-inch white trim has an aperture of 3.34 inches Juno 4-inch cone trim is air light listed when paired with the juno IC1 housing Compatible with IC1, IC1W, IC1S, IC1P, TC1, TC1S and TC1R housings and can be used with 50W PAR20 or 50W R20 light bulb Compatible with IC1P housing and can be used with 40W K19 Light bulb Compatible with TC1RCW housings and can be used with 50W PAR20 light bulbs