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LED Q&A

Q. Why does it take so little energy to produce light compared to other traditional light sources?

A. Led lighting is extremely efficient converting energy into light. They can be as efficient as 95%, but typical efficiencies are around 80-95. An incandescent bulb produces a lot of heat and comparatively little light. That is why a 12W LED bulb produces as much light as a 100W incandescent bulb and still is cool to the touch.

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Glossary of Terms

Induction 14" Wall Pack Semi Cut-Off Type Fixtures

This product is Made in the USA - ARRA Compliant. Call us for details.

Induction 14" Wall Pack Semi Cut-Off Type Fixtures

Catalog #: 21040SCT-UNV

Induction 14" Wall Pack Semi Cut-Off Type Fixtures . Replaces HID Lighting. 100,000 hrs with limited 10 year warranty.

Semi Cut-Off type wall pack
Heat and impact resistant tempered glass lens
Aluminum cast housing with electrocoat bronze paint
Ballast made of long life components
InstantON(TM) flicker-free Cold Start and Hot Re-Start
Correlated Color Temperature of 5000 K for greater visibility
High Power Factor, Low THD Replaceable Ballast
Concealed continuous gasket seals against harmful dust, dirt, moisture and insects
Advanced phosphors for high Lumen Maintenance and high lumen output
Aluminum Anodized reflector for superior long term performance
Up to 20 years Maintenance free operation
Ideal replacements for HPS and HID floodlights

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Color rendering: For a light source, the extent of the agreement between the perceived color of a surface illuminated by the source and that of the same surface illuminated by a reference source under specified viewing conditions, measured and expressed in terms of the chromaticity coordinates of the source and the luminance of the source in agreed spectral bands.

Lumens: also known as luminance. It is a measure of the amount of light a bulb produces near the beginning of usage.

Luminous efficacy: The ratio of the total emitted luminous flux, in lumens, to the total electric power consumption in watts.

Luminous flux: The rate of flow of light per unit of time, especially the flux of visible light, expressed in lumens.

Luminous intensity: The luminous flux density per solid angle as measured in a given direction relative to the emitting source. The customary unit is candlepower, the SI unit is the candela.

Life Hours: an average rating in hours when approximately 50% of the bulbs in the test fail. The testing assumes normal operating conditions.

Color Temperature: The measurement of color expressed in Kelvin (K). The lower the Kelvin rating, the “warmer” or more yellow the light. The higher the rating, the “cooler” or more blue the light. For residential use, we recommend our day white and natural white colors.

Glare: The sensation produced by brightness within the visual field that is sufficiently greater than the luminance to which the eyes are adapted. Glare can cause blurred vision, discomfort, headaches or loss in visual performance and visibility.

Voltage: a measurement of electrical potential and is the force that pushes electrical current through a conductor.

Wattage: the rate at which energy is taken from an electrical source or dispersed by a load. LED Bulbs are rated in Watts to indicate energy consumption.

Illuminance: The density of luminous power, also called “illumination.” One lumen of luminous flux uniformly incident on 1 square foot of area produces an illuminance of 1 footcandle. In SI units, one lumen of luminous flux uniformly incident on 1 square meter of area produces an illuminance of 1 lux.

Ingress protection rating: The IP code or IP rating defined in the international standard IEC 60529 that classifies the level of protection that electrical appliances provide against the intrusion of solid objects or dust, accidental contact, and water.

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Call us for pricing

1.888.423.3191

•40 Watts - 3,200 Lumens (21040SCT-UNV)

Starting from: 292.50

* Includes free shipping in lower 48 US states.
* Volume discounts available.

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