40 Watt - CFL - 150 W Equal - 5000K Full Spectrum - Min. Start Temp. 0 Deg. F - 80 CRI - 66 Lumens per Watt - 15 Month Warranty - Energy Miser FE-IS-40W-50K
Additional Media

40 Watt CFL - 5000K Full Spectrum

CFL - 150 W Equal - 5000K Full Spectrum - 80 CRI - 66 Lumens per Watt - 12 Month Warranty


Energy Saving Calculator

LED Replacement     Watts
Existing Lamp     Watts
Lamps Replaced    
Cost per kWh    
Savings over life of lamp:   $0

Energy Savings / ROI Calculator close X

Calculate the total kilowatts saved by replacing the inefficient lamps with more efficient lamps

Original Lamp Wattage
Replacement Lamp Wattage X
Watts Saved Per Lamp =
Number of Lamps to Replace X
Total Watts Saved =
Total Kilowatts Saved =

Calculate the total kWh per year saved

Total Kilowatts Saved
Enter Hours Used Per Day X
Enter Days Used Per Week X
Enter Weeks Used Per Year X
Total kWh Saved Per Year =

Calculate the total energy cost saved per year

Total Kilowatts Saved Per Year
Energy Cost Per kWh X
Total Energy Cost Savings Per Year =

Payback on Investment

Initial Cost of Lighting Upgrade $
Total Energy Cost Savings Per Year /
Number of Months for Payback on Investment =
Savings over life of lamp =
40 Watt compact fluorescent replaces 150 Watt incandescent light bulb. Full Spectrum 5000K color temperature is clear and bright, ideal for museums, jewelry stores, and hospitals. Preferred in commercial applications.


Stock Code:  FC40-FEIS40W50
Part No.:  FE-IS-40W-50K
Voltage:  120
Bulb Shape:  Spiral
Dimmable:  No
CRI:  80
Diameter:  2.68 in.
Life Hours:  10,000
Start Temp. (Min):  0 Deg. F
Case Quantity:  50
Brand:  Energy Miser
Wattage:  40 Watt
Bulb Color:  Full Spectrum
Base Type:  Medium (E26)
Color Temperature:  5000 Kelvin
Length:  6.8 in.
Incandescent Equal:  150 Watt
Lumens (Initial):  2650
Warranty:  12 Month

Customer Reviews

Rated 4.7 out of 5 by 7 reviewers.
Rated 5 out of 5 by Great bulbs We are using these bulbs in our street light fixtures in our small condominium. They are extremely white and the residents say they produce great light. Out of 50 bulbs one was bad and 1000 bulbs gave me a rapid refund in that bulb. Thanks guys, great product and outstanding service April 8, 2012
Rated 4 out of 5 by seems to be an effective small plant light I needed a bulb to fit in a cheap clip-on lamp above my carnivorous plants but the 40W bulbs in my local big box store had bases that didn't fit. This bulb does. It stays relatively cool, has a nice color and the plants seem to like it - with this bulb they seem to be recovering from an incandescent plant grow light I was using earlier. It's on a timer and has been in use for about a month, running about 8 hours a day. They all arrived in good condition, no problems. February 16, 2012
Rated 5 out of 5 by No reason not to be using these! CFL's have come a long way since they were first commercially available. These fit in most of my regular sockets, warm up quickly to full brightness, and give off a fairly natural light. October 6, 2011
Rated 5 out of 5 by Work very well. I have bought a few of these bulbs and they have all worked great and are still doing their job! July 1, 2011
Rated 5 out of 5 by Great lighting for my food blog I purchased 2 of these lights to use in opaque glass tabletop lamps. They provide the perfect lighting to take photos for my food blog! I am very pleased with this light bulb and would recommend it to anyone who wants bright, full spectrum light. June 30, 2011
Rated 5 out of 5 by Quick to start bright light I really like the color temperature of 5K as it is close to natural light and especially good for detailing my car in my garage. June 8, 2011
Rated 4 out of 5 by functions well and bright So far these bulbs have worked well. They are bright and light up quickly. June 7, 2011
1-7 of 7

100bulbs.com Changing the way people buy lightbulbs