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Black Lights > Incandescent > Westinghouse 03921 (40T10/BL/CD)

40 watt 120 volt T10 Medium Screw (E26) Base Black Light Blue Incandescent Westinghouse Light Bulb (Westinghouse 40T10/BL/CD 03921)

Westinghouse

40 watt 120 volt T10 Medium Screw (E26) Base Black Light Blue Incandescent Westinghouse Light Bulb

In Stock - Ships Fast!

Product Reviews

9/11/11 (Pittsfield, VT)

This light bulb repaces a previous OLD bug light. I was using it in one of our green houses as the small insects were swarming on our Oyster mushrooms and the old light worked good but old age finiahed it. I couldn't find a replacement bug light so I tried this one. It worked perfectly.

This customer recommends this product!

8/16/10 (Skaneateles, NY)

I needed an unusual lamp that was not available locally. eLightBulbs provided the lamps quickly was a very attractive price. Definitely worth the experience.

This customer recommends this product!

Westinghouse 03921
40T10/BL/CD

Specifications:

Our Part #:	AL 03921
UPC Code:	030721039218
Manufacturer:	Westinghouse
Manufacturer Code:	40T10/BL/CD
Case Size:	60 ($167.40/Case)
The pricing of $2.79 is per item, not case


Energy Used:	40 watts
Average Lifetime:	480 hours
Volts:	120
Bulb Type:	T10
Base Type:	Medium Screw (E26)
Color / Finish:	Black Light Blue
Length:	5.2 inches

Lumens (light output)

This refers to the literal measure of the light-output of a particular light bulb, measured in the number of lumens.

Watts (Energy Used)

"Watts" is the term applied to the amount of energy required and used by a particular light bulb. It is an international system unit of power equal to one joule per second. Contrary to popular belief, the wattage of a bulb does not directly measure the brightness; the "lumens" of a light is what defines the actual light output.

Average Lifetime

This refers to an average lifetime rating based on large quantities in test groups. This testing takes into account usage of 3 hours per start for fluorescent lamps and 10 hours per start for HID lamps.

Voltage is a measure of electrical potential.

The "Bulb Type" is typically a combination of the style of bulb as well as the width of the bulb. Usually, the first couple letters will indicate the type; "G" would indicate "Globe", "PAR" would indicate "Parabolic Reflector"... The numbers indicate the diameter of the light bulb in eighths of an inch; a "G40" would be a "Globe" style that is "5 inches" in diameter.

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