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HIGH EFFICIENCY LAMBERTIAN OPTIC (HLO) - matte white side reflectors combined with High-Efficiency Lambertian Optic (HLO) shielding of diffusing 0.075" thick acrylic with up to 88% transmission and good source obscuration. Luminaire brightness is controlled by the flux-to-shielding area ratio.

The label might include the Energy Star logo if the bulb meets the energy efficiency and performance standards of the Environmental Protection Agency and the Department of Energy’s ENERGY STAR program. For more on ENERGY STAR standards, visit energystar.gov.

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Today’s light bulbs are designed to use less energy, so wattage isn’t a reliable way to gauge a light bulb’s brightness. Lumens measure brightness: more lumens means brighter, while fewer lumens means dimmer.

For many shoppers, the light appearance, or color temperature, of the bulb matters a lot. The Lighting Facts label will tell you where that bulb falls on the warm (more yellow) to cool (more blue) range.

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Once you know how bright a bulb you want, compare factors like the yearly energy cost, which is on the Lighting Facts label.

Hex is the distinctive and flexible six-sided luminaire for creative designs. Cell configuration determines the light distribution and overall light output. Each cell is illuminated by its own LED array with consistent light output and brightness across all cells. The 2" wide panels snap into the core armature providing nearly seamless transition from cell to cell, as well as access to LED arrays and driver.

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For example, a traditional 60-watt incandescent bulb produces about 800 lumens of light. By comparison, you can find an LED (light-emitting diode) bulb that produces that same 800 lumens but uses only about 9 watts.

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This graphic shows the number of lumens produced by traditional incandescent bulbs. If you’re looking to buy a bulb with the amount of light you used to get from a 60-watt bulb, for example, you’ll now look for 800 lumens.

The number of lumens is printed on the bulb. If the bulb is a CFL (compact fluorescent), it might be on the bulb’s base. CFLs also include a web address, epa.gov/cfl, for information on safe recycling and disposal. Since CFLs contain mercury, it’s important to clean up and dispose of CFLs if they break.