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General Purpose Light Bulbs > PS35 > GE 21581 (500/IF)

500 watt 130 volt PS35 Brass Mogul Screw (E39) Base Frosted High Wattage Incandescent GE Light Bulb (GE 500/IF 21581)

500 watt 130 volt PS35 Brass Mogul Screw (E39) Base Frosted High Wattage Incandescent GE Light Bulb

Should ship by June 7. Why?

Compare GE 21581 with other Brands:

500 watt 130 volt PS35 Mogul Screw (E39) Base 2,850K Inside Frosted Incandescent Sylvania Light Bulb (Sylvania 500PS35/IF 130V 16040)

500 watt 130 volt PS35 Mogul Screw (E39) Base Frosted Extended Service Incandescent Philips Light Bulb (Philips 500/99IF 130V 43180)

GE 21581
500/IF

Specifications:

Our Part #:	GL 21581
UPC Code:	043168215817
Manufacturer:	GE
Manufacturer Code:	500/IF
Case Size:	24 ($431.76/Case)
The pricing of $17.99 is per item, not case


Light Output:	10,850 lumens
Energy Used:	500 watts
Average Lifetime:	1,000 hours
Volts:	130
Bulb Type:	PS35
Base Type:	Mogul Screw (E39)
Filament Type:	CC8
Color / Finish:	Frosted
Length:	9.37 inches
Width:	4.37 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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