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- Estimated life of 21.9 years based on 3 hours use per day
Lighting Facts Per Bulb |
| Brightness 3500 lumens |
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Estimated Yearly Energy Cost $4.82
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
3500 K
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| Energy Used40 watts |
SAFETY COATED Philips brand energy saving T8 fluorescent lamp. ALTO technology uses less mercury for an environmentally safer lamp.
• Neutral white color is popular with many businesses
• Better color rendering makes colors appear brighter, objects appear closer to their true color
• T8 technology lasts longer than traditional T12, with better lumen maintenance
• Performance - well known brand name at a competitive price
Please see our Return & Restocking policy referencing exceptions for products over 49".
Brand | Philips Lighting |
Product Line | Alto |
Energy Used
A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
| 40 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 |
Bulb Color
The color of the light produced by a bulb
| Neutral 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.
| 84 |
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).
| 3500 |
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.
| 3500 |
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.
| 60 |
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 |
GE
A General Electric brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.
| 22661 - F40T8/SPX35 |
Osram Sylvania
An Osram Sylvania brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.
| 22145 - FO40/835/ECO |