American Lighting X34-E26-40 X34 Interchangeable Series LED Light Module, 7.4-watt, White Energy Star Certified Suitable for use in wet locations X34 modules are available in 2700K , 3000K and 4000K with 82 CRI, for a variety of lighting applications Dimmable (5-100% light control) see instructional pdf available on detail page and reference page 3 for dimmable instruction details 5 year warranty