UL listed. 40" wide x 7" high overall. Head is 2" wide. Each light head is 3 1/2" wide. Ceiling canopy is 1" high by 4 5/8"diameter. 500 lumen light output each, Each head comparable to a 50 watt incandescent bulb. 3000K color temperature. Four-light energy-efficient LED track fixture from Pro Track. Black finish. Adjustable heads. Each light head rotates 330 degrees. Dimmable with an LED rated dimmer. Track lighting style fixture - easily installs in a junction box like any ceiling or wall light. This black finish track fixture from Pro Track features four adjustable light heads that offer maximum flexibility. With a sleek, straight bar that's mounted to a circular canopy, this design has a classic look and feel. As a plus, the fixture is equipped with bright LED bulbs that make for a design that is as energy-efficient as it is smart and stylish. Dimmable with a separately purchased LED rated dimmer.