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The LED Authority

MaxLite 23W Cool White R40 CFL Bulb, E26 Base

SKU: M33030 | Ordering Code: SKR423FLCW (23 Watt,R40 Reflector)  | UPC: 767627330308

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Product Highlights

  • Energy efficient replacement for a conventional 125 watt bulb
  • Estimated life of 7.3 years based on 3 hours use per day

Lighting Facts Per Bulb

Brightness 1100 lumens
Estimated Yearly Energy Cost $2.77
Based on 3 hrs/day, 11¢/kWh
Cost depends on rates and use
Based on 3 hrs/day7.3 years
Light Appearance
4100 K
Energy Used23 watts

Maxlite brand 23 Watt compact fluorescent reflector lamp. R40 size and shape replaces 65 Watt BR40 lamp and fits into the larger recessed lighting fixtures sometimes used in both homes and businesses. Cool white color and high color rendering means a brighter, more colorful space.

  • Outstanding energy efficiency - provides equivalent light to most 125 Watt incandescent BR40 lamps while using only 23 Watts of electricity

  • Outstanding life - 8,000 hour rated life is four to eight times as long as most incandescent lamps

  • Outstanding value - replace your existing lamps with more energy efficient technology, at a competitive price

NOT RECOMMENDED for use in enclosed fixtures or for use with control devices such as sensors or dimmers, may shorten lamp life

Full Specs



Energy Used

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

Incandescent/Halogen Equivalent

The wattage value of an incandescent or halogen lamp of similar brightness.
Incandescent/Halogen Equivalent
125 Watts


A measure of "electrical pressure" between two points. The voltage specification of an incandescent lamp is the electrical "pressure" required to drive it at its designed point. The "voltage" of a ballast (e.g. 120 V) refers to the line voltage coming from the power source and is connected to the ballast.


The end (or ends) of the lamp that fits into the socket.
Medium (E26)

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

Bulb Color

The color of the light produced by a bulb
Bulb Color
Cool 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 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.
Brightness (Lumens)

Bulb Finish

The surface finish of a bulb, which may affect the quality of the light emitted.
Bulb Finish

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)

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.
Diameter (in)

Contains Mercury (Hg)

Contains some level of the element Mercury. Typically, bulbs containing Mercury display the symbol 'Hg'.
Contains Mercury (Hg)
Customers Also Viewed
Customer Reviews



8-23-16: I removed these Maxlite R40 CFLs from my kitchen ceiling yesterday while upgrading to a cleaner-looking, more-efficient LED retrofit kit in the recessed cans. Check out the install dates from 2010! Fantastic light and life for the last six years.


Worcester, MA


Great Bulbs!


Just what I was looking for. Thanks!




Great product


Used this to replace a hallogen and cut my energy use by %75.


Hubbarston, MA


MaxLite 125 Watt Incandescent Equivalent, 23 Watt, R40 Cool White Compact Fluorescent Medium Base Bulb

4.3 3


Q & A
Can this be used in outdoor flood applications? It will be exposed to some weather.


This product is made for indoor applications. If used outdoors, it must be in a protected area and not exposed to the elements.

Product Support