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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Fits perfectly in my pharmacy floor lamp. Quick delivery. And when one bulb arrived broken, a replacement was sent immediately.
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Customer recommended! |
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2/25/13 (Springfield, MO)
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Used these bulbs in my exterior fixtures at my front entry & back veranda. Perfect soft lighting I wanted.
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Customer recommended! |
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Good product!
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Customer recommended! |
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Perfect! Exact replacement. Lamp is good as new!
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Customer recommended! |
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10/31/12 (Las Cruces, NM)
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Order arrived in good condition and in a timely manner. Good job.
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Customer recommended! |
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10/18/12 (West Terre Haute, IN)
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This is an excellent bulb. We are using it in a walk in cooler where the temperature is almost a constant 38 degrees F and works well. The only down side was that the cost of shipping equalled the cost of the bulb.
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Customer recommended! |
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8/24/12 (East Orange, NJ)
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I bought these bulbs Walgreen's did not have them anymore. I found you on the website and the bulbs are the same ones and fit the same thank you for selling them at a great price. I will be ordering again when I need some more.
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Customer recommended! |
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Great Service, Great Price.
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Customer recommended! |
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Product as represented and received in a timely manner. I would recommend eLightBulbs as an excellent source for such items.
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Customer recommended! |
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2/09/12 (Port orchard, WA)
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All received in good order. Good product. Many thanks.
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Customer recommended! |
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1/02/12 (West Simsbury, CT)
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Very quick delivery and good product!
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Customer recommended! |
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12/21/11 (Glastonbury, CT)
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Glad you guys had bulbs been looking for a year thank you, now I can see.
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Customer recommended! |
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Great for my table lamp. The last one lasted for about a year.
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Customer recommended! |
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Perfect!
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Customer recommended! |
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No problems, thank you..
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Customer recommended! |
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We purchased this product for use in a walk-in freezer. It is working great.
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Customer recommended! |
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Specials
We offer the lowest shipping rate of our online competitors.
