GE 21305 - F382D/827/4P - 38 Watt 4 Pin GR10q-4 Base - 2700K - CFL It is GE F382D827/4P 38W 2D Fluorescent Replacement Lamp It is of 4 Pin Plug 2850 Lumens 10 000 Hours Kelvin Temperature = 2700 Degrees Cri=82 Energy Star Rated Carded