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1' - 11/16/20 watt - 120/277 volt - 4,000K - Cool White - Future Fit Series - Dimmable | Keystone LED Retrofit Troffer
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Not in Stock - Ships in 8-10 Days.
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Our Part #:
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KT12821
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Manufacturer:
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Keystone
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Manufacturer Code:
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KT-RKIT20PS-2AG11-840-VDIM
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Case Size:
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20
($1,570.60/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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Selectable 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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Selectable 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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54,000 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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Volts:
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120/277
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Voltage is a measure of electrical potential.
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Color Temperature:
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4,000K
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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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80
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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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Length:
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11 inches
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This is sometimes referred to as MOL, or "Maximum Overall Length". For light bulbs, 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. For light fixtures, it applies to the complete vertical length of the fixture, out of the package.
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Width:
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1.3 inches
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For light bulbs, the width refers to the complete diameter of the widest point of the light bulb. For light fixtures, it applies to the widest horizontal point of the fixture, out of the package.
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