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18 Watt 4-Pin Neutral White Quad/Double Twin Tube CFL Bulb

SKU: G173010 | Ordering Code: 18W/Q/4P/35K

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Lighting Facts Per Bulb

Brightness 1200 lumens
Estimated Yearly Energy Cost $2.17
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
Based on 3 hrs/day9.1 years
Light Appearance
3500 K
Energy Used18 watts

Greenlite brand 18 Watt plug-in compact fluorescent bulb with G24q-2 base.

  • Neutral white color very popular with most businesses

  • Value - light interior spaces efficiently and at a competitive price

5-Pack Only (multi-pack priced per each bulb)

Full Specs

Product Details


Greenlite Corp.

Energy Used

A rating, expressed in watts, to indicate the rate at which a lamp consumes energy. Also known as wattage value.
Energy Used
18 Watts


The end (or ends) of the lamp that fits into the socket.

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".
Bulb Shape
Double Twin Tube

Bulb Color

The color of the light produced by a bulb
Bulb Color
Neutral White


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.

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).
Color Temperature (Kelvin)

Brightness (Lumens)

A rating of the inital 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.
Brightness (Lumens)

Bulb Technology

The technology implemented by the bulb, e.g. incandescent, halogen, LED
Bulb Technology

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.
Average Rated Life (hr)

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.
Length (in)

Contains Mercury (Hg)

Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
Contains Mercury (Hg)


A General Electric brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.

Osram Sylvania

An Osram Sylvania brand-specific product number for an equivalent item and is provided for the purpose of cross-referencing.
Osram Sylvania
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