Columns-11" x 11" top & base
Lighted Base-13 1/2"L X 13 1/2"W X 3"H. Can be used for columns. Includes a 15 watt led flood light which is a 90 watt equivalent. 1200 lumens. Use 15 watts and .1 amps when calculating loads. This bulb is dimmable, with an LED dimmer.