Description: DULUX 18W flat compact fluorescent lamp with 4-pin base, 4100K color temperature, 82 CRI, for use on magnetic, electronic and dimming ballasts Abbrev. With Packaging Info. CF18DF841 10/CS 1/SKU Average Rated Life (hr) 10000 Base 2G10 Bulb T5 Color Rendering Index (CRI) 82 Color Temperature/CCT (K) 4100 Family Brand Name DuluxÌâå F Industry Standards IEC 60901- 3118 Initial Lumens at 25C 1100 Mean Lumens at 25C 946 Maximum Overall Length - MOL (in) 4.8 Maximum Overall Length - MOL (mm) 122 NEMA Generic Designation (current) CFM18W/2G10/841 Nominal Wattage (W) 18.00