Lumens (light output)
This refers to the literal measure of the light-output of a particular light bulb, measured in the number of lumens.
Watts (Energy Used)
"Watts" is the term applied to the amount of energy required and used by a particular light bulb. It is an international system unit of power equal to one joule per second. Contrary to popular belief, the wattage of a bulb does not directly measure the brightness; the "lumens" of a light is what defines the actual light output.
Average Lifetime
This refers to an average lifetime rating based on large quantities in test groups. This testing takes into account usage of 3 hours per start for fluorescent lamps and 10 hours per start for HID lamps.
Volts
Voltage is a measure of electrical potential.
Bulb Type
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The "Bulb Type" is typically a combination of the style of bulb as well as the width of the bulb. Usually, the first couple letters will indicate the type; "G" would indicate "Globe", "PAR" would indicate "Parabolic Reflector"... The numbers indicate the diameter of the light bulb in eighths of an inch; a "G40" would be a "Globe" style that is "5 inches" in diameter.
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Base Type
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The "Base" of a light bulb is the part that either screws or snaps into a receptacle. Base Type terminology may indicate common descriptive words like "Medium" or "Candelabra", or may even contain numeric codes that signify size and variety, like "E26" or "2GX13".
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Filament Type
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The filament is the style of fine wire that is heated electrically inside of an incandescent light bulb.
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Color Temperature
Correlated Color Temperature (CCT) is a specification of the color appearance of a light bulb, relating its color to that of a reference source heated to a particular temperature, measured in degrees Kelvin (K). It generally measures the "warmth" or "coolness" of light source appearance.
CRI (Color Rendering Index)
CRI refers to the "Color Rendering Index" of a light bulb. CRI measures a light source and grades its ability to render the color of objects "correctly," as compared with a reference source with comparable color temperature. 100 is perfect rendering.
Length
This is sometimes referred to as MOL, or "Maximum Overall Length". It measures the absolute length of a light bulb, from the top of the bulb to the bottom of the base and is typically expressed in inches.
Width
Width refers to the complete diameter of the widest point of the light bulb.
Beam Angle
The beam angle refers to the width of the light beam coming from a reflector light bulb. The higher the number, the wider the beam spread.
# of Lamps
This refers to the number of Fluorescent or HID light bulbs that this particular ballast can light.
Bulb Type Used in Ballast
This refers to the style of light bulb that this particular ballast can light.
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I recommend it to whoever uses a lampstand for it. It works fine, at least for now over a month.
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Customer recommended! |
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The bulb was just fine. It was to replace one for a lamp I have had for 10 years....
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Customer recommended! |
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8/07/12 (Manhattan Beach, CA)
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Hard to find these locally. The fixtures were installed by a contractor working for Edison. The problem is the bulbs need to be replaced periodically.
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Customer recommended! |
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I'm very happy with my purchase. I was a bit concerned about ordering light bulbs and having them shipped, but they were delivered intact and in full working order. I was unable to find these particular bulbs in the big box stores locally. This was very convenient. Thank you.
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Customer recommended! |
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3/27/12 (Santa Barbara, CA)
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When I bought the lamp I had no idea how the bulbs worked...but when they burned I did not know what to do....but finding your site taught me how to use the two bulbs...tand they work beautifully...if they ever die on me again, I shall return!!!
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Customer recommended! |
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I had to replace 1 bulb since 2009 where I had replace 3 of the other bulbs.
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Customer recommended! |
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I could not find this product in the stores near me. It was a perfect fit. Will definitely or more in the near future.
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Customer recommended! |
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10/28/11 (Essex Junction, VT)
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Could not find anywhere else. Just what I needed.
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Customer recommended! |
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10/07/11 (Chula Vista, CA)
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The bulb works perfectly in this ceiling reflecting lamp. Looks, fits and works as the original bulb.
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Customer recommended! |
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Works as expected. Your online service was top notch and painless. I will order again when I need something you sell :) Thanks
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Customer recommended! |
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I have already placed one of the bulbs in my lamp, and the result is terrific. Great bulb! So glad that I found you on line, because there is no electrical supply store around here that stocks this particular bulb. Thanks!
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Customer recommended! |
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