WITH JUNO RETROFIT 2700K LED RETROFIT DOWNLIGHT RLD 4-INCH TRIM MODULES, UPGRADING YOUR EXISTING 4-INCH RECESSED FIXTURE IS" EXPENSIVE AND NEARLY AS SIMPLE AS REPLACING AN" CANDESCENT LAMP. MODULES FEATURE A WHITE ALUMINUM BAFFLE WITH A BUILT-IN FLANGE. A DEEPLY REGRESSED DIFFUSING LENS CONCEALS THE LEDS FROM DIRECT VIEW AND PROVIDES UNIFORM APERTURE LUMINANCE.