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400 watt - ED28 - Mogul Screw (E39) Base - 4,100K - Cool White -Clear - High Output - Position Dedicated Base Up - Reduced Color Shift - Reduced Outer Jacket - Metalarc® Pulse Start | Sylvania Metal Halide HID Light Bulb
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Not in Stock - Ships in 8-10 Days.
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Our Part #:
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SL64052
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Manufacturer:
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Sylvania
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Manufacturer Code:
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MS400/PS/BU-ONLY/ED28
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Case Size:
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6
($1,026.84/Case)
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For an explanation of a lighting term, click on the 
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Light Output:
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40,000 lumens
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Refers to the literal measure of the light-output of a particular light bulb, measured in the number of lumens.
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Energy Used:
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400 watts
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"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.
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Average Lifetime:
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20,000 hours
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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.
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Bulb Type:
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ED28
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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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Mogul Screw (E39)
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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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Color Temperature:
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4,100K
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This is the color of the light coming from the bulb.
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Color/Finish:
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Cool White
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CRI:
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65
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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.
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