|
400 watt - High Output - BT37 - Mogul Screw (E39) Base - 4,000K - Cool White - Clear - Position Oriented Metal Halide Lamp - Super Metalarc® | Sylvania Metal Halide HID Light Bulb
|
Not in Stock - Ships in 8-10 Days.
|
|
Our Part #:
|
SL64038
|
|
Manufacturer:
|
Sylvania
|
|
Manufacturer Code:
|
MS400/BU-ONLY/ED37
|
|
Case Size:
|
6
($216.00/Case)
|
|
|
For an explanation of a lighting term, click on the 
|
|
|
|
Light Output:
|
42,000 lumens
|
|
|
 |
|
|
Refers to the literal measure of the light-output of a particular light bulb, measured in the number of lumens.
|
|
|
|
|
Energy Used:
|
400 watts
|
|
|
|
|
|
"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:
|
20,000 hours
|
|
|
|
|
|
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.
|
|
|
|
|
Bulb Type:
|
BT37
|
|
|
|
|
|
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.
|
|
|
|
|
Base Type:
|
Mogul Screw (E39)
|
|
|
|
|
|
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".
|
|
|
|
|
Color Temperature:
|
4,000K
|
|
|
This is the color of the light coming from the bulb.
|
|
|
Color/Finish:
|
Cool White
|
|
CRI:
|
65
|
|
|
|
|
|
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.
|
|
|
|
|
