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- Energy efficient replacement for a conventional 100 watt bulb
- Estimated life of 11 years based on 3 hours use per day
Lighting Facts Per Bulb
|Brightness 1600 lumens|
Estimated Yearly Energy Cost $3.13
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
Based on 3 hrs/day11 years
|Energy Used26 watts|
Longstar brand Commercial Grade 26 Watt compact fluorescent lamp. Bright white color and high color rendering means a brighter, more colorful space
Outstanding performance - provides 1600 lumens of light while using only 26 Watts of electricity. Meets or beats lumen requirements for most major hotel chains.
Outstanding life - 12,000 hour rated life is six to twelve times as long as most incandescent lamps
Outstanding value - replace your existing lamps with more energy efficient technology, at a competitive price
NOT RECOMMENDED for use in enclosed fixtures or for use with control devices such as sensors or dimmers, may shorten lamp life
A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
The wattage value of an incandescent or halogen lamp of similar brightness.
A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.
The end (or ends) of the lamp that fits into the socket.
The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
The color of the light produced by a bulb
Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.
Color Temperature (Kelvin)
Color Temperature (Kelvin)
An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.
The surface finish of a bulb, which may affect the quality of the light emitted.
The technology implemented by the bulb, e.g. incandescent, halogen, LED
Average Rated Life (hr)
Average Rated Life (hr)
A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
Contains Mercury (Hg)
Contains Mercury (Hg)
Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
Great quality and performace .
Its a big business and need to have your products on hand and your cost is great .
Chicago , Ill
I use these bulbs in my kitchen, living room and office. Absolutely love the way they brighten up the room. My kids do their homework in the kitchen and these bulbs provide great lighting for reading and writing; same for computer use in the office. I bought 16 of these bulbs in February 2012 and as of today, 7 have already popped. Some popped within 3 months use, some within a year and some within 2 years. That's more than a 40% failure rate in a span of 2.5 years.
You will not get 12,000 hours out of these bulbs so consider this and the cost before purchasing.
New York, NY
We ordered these are a replacement to our lighting booth. We ordered 100 bulbs to replace the old bulbs before they went out. Great price by over half and they came in fast.
You get what you pay for.
The first group I purchased two years ago lasted almost two years. The group I purchased in the spring of 2013, most have burnt out in 6-9 months.
These high (K) bulbs are the only way to go. Our home was using low (K) bulbs for years, we really didn't know the difference, the only thing I did know was that CFL bulbs were horrible, ie. dim/yellow glow. After some research, and discovering that we knew nothing about CFL lighting, it became evident that we were using the wrong ones (for YEARS). I guarantee if you use these high (K) bulbs, you will never go back to standard light bulbs again. Also, do some checking----you won't find better bulbs/prices anywhere else. Thanks Bulbs.Com.................you have my business.
nice, white, bright, and cheap.
ceiling and floor lights
Seems to be a quality bulb
I bought these bulbs to brighten up 3 rooms in my house. These worked perfectly. I didn't want a warm color light, because they mute the colors in my house. These 5000k bulbs worked great. I bought some 2700k bulbs for the bedrooms.
These are some of the brightest 100 watt bulbs I have ever used.
Would order again
> I will never buy another 6500k bulb. They are labeled Daylight, and I bought several for general use, for the "daylight" color, and for the birds. The 6500k bulbs have nothing to do with "daylight", and I had to remove all but one pair in a ceiling lamp in the living room, that has to go through a Tiffany stained glass fixture.
> This gross error in labeling can be found wherever CFLs are sold, it is a manufacturing problem, it has nothing to do with Bulbs.com, a distributor. The 6500k color is FREAKY. Your browns and yellows are way off. In real daylight, all colors are correct.
> I bought a number of these 5000k color bulbs, and they are as far to the blue as I will go with *artificial* lighting. Through trial and error I have also discovered that I can also use the 4100k color. I have chosen the 5000k for the bird room. I always hated the sickly yellow of the average incandesent bulbs, which are now going extinct, and were too hot anyway.
> I am happy with this purchase, this is a good price on a 100w equivalent.
> For your info:
> Warm White: 2700k color, too yellow
>Cool White 4100k color, right in the middle
>Bright White 5000k color, bluish but OK
>Daylight 6500k color, nothing daylight about it. Downright freaky
>Will order from Bulbs.com again. Good prices.
60 year old geek
I would buy this again and again
We replaced all the lights in our sanctuary. It is much brighter and cheerier and uplifting
Ed the man
Long Star 26W Commercial Grade 120V Bright White CFL Bulb
Q & A
- Who is the manufacturer and where is this light bulb manufactured?
This is a Longstar brand CFL and is made in China.
- Why is this bulb "not recommended for use in enclosed fixtures"? I have been using 26w CFL in my outside fixtures for years.
This compact fluorescent includes an integrated ballast. When used in enclosed fixtures, the heat will build up and affect the life and performance of the bulb. It is recommended that the fixture (especially indoor fixtures) have some ventilation.