TCP 17040, 40 Watts Ballast Circle Adapter is one of the world leaders in lighting. You likely have a light bulb in your home made from TCP and you likely didn't know it. Light up your home, yard or business up with this 40-Watt Ballast Circling Adapter (No Bulb) from the Energy Star 2013 Partner of the Year. 40W Ballast Adapter 2700K Lifetime Rated up to 10,000 Hours TCP 17040 40 Watt Circline Compact Fluorescent Bulb - Medium Screw Base Depth: 2.50 in Height: 2.00 in Weight: 0.35 lbs Width: 2.50 in Length:1.35 in IF YOU HAVE ANY QUESTIONS PLEASE ASK PRIOR TO BUYING |