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- Estimated life of 21.9 years based on 3 hours use per day
Lighting Facts Per Bulb |
| Brightness 2550 lumens |
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Estimated Yearly Energy Cost $3.49
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
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Life
Based on 3 hrs/day21.9 years
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Light Appearance
WarmCool
4100 K
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| Energy Used29 watts |
Philips energy saving 29 Watt T8 U-bent fluorescent lamp with 1.65" gap fits into fixture designed for 31 Watt lamps. ALTO technology uses less mercury for an environmentally safer lamp.
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Uses almopst 10% less energy than standard lamp
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Cool white color is very popular for most businesses
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T8 technology last longer than traditional T12, with greater lumen maintenance over time
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Performance - well known brand name product at competitive price
5-Packs only
Brand | Philips Lighting |
Product Line | Alto |
Model Number | FB29T8/TL841/EW/ALTO |
Energy Used
A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
| 29 Watts |
Base
The end (or ends) of the lamp that fits into the socket.
| Medium Bipin |
Bulb Shape
The description of the general appearance of a lamp/bulb consists of a letter(s) followed by a number. The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. For example, a common household bulb is the A-19. The bulb is "A" shape and the diameter would be nineteen 8ths of an inch, or 2 3/8".
| T-8 U-Bent |
Bulb Color
The color of the light produced by a bulb
| Cool White |
CRI
Color Rendering Index is an international system used to rate a lamp's ability to render object colors. The higher the CRI (based upon a 0-100 scale) the richer and more accurately colors generally appear. CRI differences among lamps are not usually visible to the eye unless the difference is more than 3-5 points.
| 85 |
Color Temperature (Kelvin)
An expression of the hue of the light emitted, measured in degrees Kelvin. Usually expressed by a four digit number followed by (k), such as 2700k. Higher temperatures indicate whiter, "cooler" colors, while lower temperatures indicate yellower, "warmer" colors. Some common Kelvin temperature benchmarks are 2700k (warm white), 3500k (neutral white), 4100k (cool white), 5000k (bright white), and 6500k (daylight).
| 4100 |
Brightness (Lumens)
A rating of the initial light output of a bulb, rated after 100 hrs of operation. Lumens are a measure of how much light falls on one square foot of area, one foot away from the light source.
| 2550 |
Design Lumens
A rating of light brightness measured when the lamp reaches 40% of its average rated light, as opposed to initial lumens measured after 100 hrs of operation.
| 2300 |
Bulb Finish
The surface finish of a bulb, which may affect the quality of the light emitted.
| Opaque |
Bulb Technology
The technology implemented by the bulb, e.g. incandescent, halogen, LED
| Fluorescent |
Average Rated Life (hr)
A measurement of the average length of time, between first use and the point when 50% of the lamps tested have stopped functioning, , using an operating cycle of 3 hours on, 20 minutes off.
| 24000 |
Length (in)
Also referred to as "Maximum Overall Length" (MOL). For light bulbs, it measures the length of a light bulb, from the top of the bulb to the bottom of the base or pins and is typically expressed in inches. For light fixtures and ballasts, it applies to the total horizontal length of the item.
| 22.44 |
Diameter (in)
Light bulbs: a measurement of a bulb's width taken at the widest point of the bulb. Fixtures: the measurement across the widest point of a circular fixture.
| 1 |
U-Bent Gap (in)
The distance between the legs of a U-Bent fluorescent bulb, measured from center to center.
| 1.6 |
Contains Mercury (Hg)
Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
| Yes |
Not For Sale In
This bulb falls within State-defined sales restrictions for the listed States.
| WA |