NEW! PAR20 Indoor/Outdoor Compact Fluorescent Reflector! Now businesses can save money too. Replace your existing PAR20 50 watt halogen reflectors with the energy-efficient money-saving 11 Watt CFL PAR20 Reflector. 2700K Warm White. How easy can it be? How about as easy as changing a light bulb. These 11 Watt Compact Fluorescent Light Reflectors give the same amount of light as the 50 watt regular halogen reflectors they replace, but these will save you money in energy costs. And these last 10000 hours. They practically pay for themselves in months. So instead of paying the utility company you can start paying yourself. Plus they last three times longer. Less trips to the store, means less hassle, more savings- all in a light bulb! Here are the facts: Light output: 380 LumensEnergy used: 11 wattsMedium baseLife: 10000 hoursOverall length: 3 5/8"Diameter: 2.5" Color Temp: 2700k warm white Nine year manufacturer's warranty This light is NOT dimmable. PLEASE MEASURE YOUR LIGHT DEPTH BEFORE ORDERING! Want more info on CFL's? What size bulb do you need?Bulb width sizes are measured (for some silly reason) in 1/8 inch increments. To find out whether or not you need an R40, PAR38, R30 or R20 measure the width across the top of the bulb and divide that number by .125 If you measured 5" for example and divide by .125 you will get 40. Consequently, an R40 bulb will work for you. Also be sure to measure the overall length. Because of the special construction of CFL reflectors some may be longer than what you are replacing.