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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It was easy to order/arrived promptly -- very happy
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Customer recommended! |
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I have had a couple of problems (broken nub lost vacuum on one.short life on another) but a phone call gave me a hassle free replacement. I sincerely appreciate the excellent service. Thank you very much.
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Customer recommended! |
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2/09/12 (Beaconsfield, PQ)
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Great vintage tube, search all over the world to find a pair! With eLightBulbs, I preserved the vintage appearance of my home!
Recommended and many thanks to eLightBulbs!
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Customer recommended! |
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"Grandma" has had a fixture over bathroom mirror with this lamp since the early 1950s. The lamp may have been original as fixture was not used much. Replacement lamps are rare and hard to find. New lamp works and looks great!
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Customer recommended! |
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11/24/11 (Carrollton, TX)
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The bulbs were on backorder and arrived ahead of schedule. They are for an old vent a hood and working fine. Will order more after the first of the year.
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Customer recommended! |
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10/05/11 (Old Greenwich, CT)
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These are exactly what I needed for my kitchen and they work great.
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Customer recommended! |
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8/13/11 (Cobourg, Ontario)
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Product was as described on website, very difficult to find this bulb and pricing was less than other bulb suppliers.
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Customer recommended! |
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Very nice warm light under kitchen cabinets. I need some sockets to replace broken ones.
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Customer recommended! |
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It is difficult to find replacement bulbs due to having a historical home. These bulbs are a perfect fit to some old fixtures...
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Customer recommended! |
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Items arrived as listed and in good condition. Thanks.
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Customer recommended! |
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5/07/11 (Grand Rapids, MI)
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I will order from eLightBulbs again. I had a problem. They fixed it quickly and professionally....exceeding my expectations.
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Customer recommended! |
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Pleased to receive this lights which are hard to find in our local stores. Well packed and arrived in good shape. Thank you.
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Customer recommended! |
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12/06/10 (Ontario, Canada)
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Absolutely awesome! I had been looking for this particular florescent light for over a year and everywhere I went I was told they were not available. I was so glad to find them on the eLightBulbs website. They shipped about 2 weeks earlier than I had expected, and they arrived at my workplace in Canada 48 hrs after shipment - and with no duty payable! Extremely well packed, too. I am so pleased. I have been talking about eLightBulbs to everyone.
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Customer recommended! |
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I bought these bulbs before they are no longer obtainable. The bulbs last about 15 years so I just made sure the ones I purchased from you work and then I put them away, hopefully this will be my last bulb purchase, for that fixture, for the rest of my life.
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Customer recommended! |
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