Product Dimensions: 2.8" H x 1.78" W x 1.78" D
This indoor screw-in 3-level dimmer is a convenient way to select just the right amount of light you need. It can create a soft night light to full brightness light while also saving energy and eliminating the need for expensive 3 way bulbs. It will convert any lamp with metal socket to a touch dimmer. For use regular bulb instead of 3 way bulb. Compatible with incandescent bulbs only.