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You are here: Home > Incandescent Light Bulbs > "A" Bulbs > A21
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"A"  Bulbs are the most common general purpose incandescent light bulbs in use today. The "A" designates that the shape of the bulb is ARBITRARY, the number following the "A" denotes the width of the glass envelope in eighths of an inch. A-21 bulbs are twenty one (21) eighths of an inch in diameter or 2.625" inches or 66.675 millimeters. The incandescent light bulb or incandescent lamp makes light by passing electric current through a wire filament in a glass envelope filled with an inert gas. The filament resists the electrical current and produces a glow (incandesces). One of the by-products of this production of light is heat. Incandescence is the emission of light (visible electromagnetic radiation) from a hot body due to its temperature. The term derives from the verb incandesce, to glow white.
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75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base 50-100-150W/A21/130V 3-WAY E26 BASE
Our Price: $1.29
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Our Price: $1.50
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75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base, 75A21/IF. 75 Watt A21 Frost, 75A21 Inside Frost, 75A21, 75A21 50-100-150W/A21/130V 3-WAY E26 BASE, 3-WAY, 3-WAYS, THREE WAY LIGHT BULB, 3 WAY BULBS, 50/A150A21/W, 50150A21DLSWRP 120V, 50/150A21 3-WAY,50/150-1PK, 50/150A/WL 12/1, #18044,#97494,#04200B, #16948-2, #S1821
75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base - 75 Watt A21 Inside Frost Medium Base 130 Volt, 5,000 Hour 50-100-150W/A21/130V 3-WAY E26 BASE - 50-100-150 Watt A21 3 Way E26 Base 130 Volt, 2,500 Hour
150A21/CL/130V/5M 150 Watt A21 Clear E26 Base 150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base
Our Price: $1.75
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Our Price: $2.60
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150A21/CL/130V/5M 150 WATT A21 CLEAR E26 BASE, 150A21/CL/130V/5M E26 BASE, 150A21/CL/130V/5M E26 BASE, 150A21/CL, 150 WATT A21 CLEAR 130 VOLT 5,000 HOUR, 150A21/135WM/TS, 150A/CL 150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base, 150A21/IF/Coated/130V E26 Base, 150A21TF, 150A21 Tuff Coat, Coated 150A21 Bulb
150A21/CL/130V/5M 150 Watt A21 Clear E26 Base - 150 Watt A21 Clear Medium Base 130 Volt, 5,000 Hour 150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base - 150 Watt Silicone Coated A21 Inside Frost, Medium Base 130 Volt
BBA (250W/120V) ANSI Photoflood E26 Base Replacement Bulb for FMP #253-1430
Our Price: $4.20
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Our Price: $4.25
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BBA (250W/120V) ANSI PHOTOFLOOD E26 BASE, BBA, BBA PHOTOFLOOD, ANSI CODE: BBA, BBA ANSI CODE,BULBO,BOMBILLA,LAMPOULE,#40563,#11619 Replacement Bulb for FMP #253-1430
BBA (250W/120V) ANSI PHOTOFLOOD E26 BASE -  250 Watt 120 Volt E26 Base, 3 Hour Replacement Bulb for FMP #253-1430 - 150 Watt Silicone Coated A21 Inside Frost, Medium (E26) Brass Base 130 Volt
150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE Redneck/E26 50-100-150 Watt A21 Medium Base 130V
Our Price: $4.99
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Our Price: $14.50
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150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE, LUNAR BRITE,#80907,PQL 80907, PET BULB,REPTILE BULBS,REPTILE LAMP Redneck/E26 50-100-150 Watt A21 Medium Base 130V, Redneck Bulbs, Redneck Lamp, Redneck Light Bulb, Redneck Torchiere Bulb, Funeral Bulb, Funeral Home Lighting, Funeral Home Light
150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE - 150 Watt Black A21 LUNAR-BRITE Pet Bulb. Medium (E26) Base 130 Volt, 5,000 Hour Redneck/E26 50-100-150 Watt A21 Medium Base 130V -  50-100-150 Watt Redneck Bulb Medium (E26) Brass Base 3-Way A21 130 Volt
   
 
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