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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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50-100-150W/A21/130V 3-WAY E26 BASE 75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base
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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, 75A21/IF. 75 Watt A21 Frost, 75A21 Inside Frost, 75A21,  75A21
50-100-150W/A21/130V 3-WAY E26 BASE - 50-100-150 Watt A21 3 Way Medium Brass Base 130 Volt, 2,500 Hour 75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base - 75 Watt A21 Inside Frost Medium Base 130 Volt, 5,000 Hour
100A21/IF/120V/NEODYMIUM 100A21/F/12V 100 Watt Inside Frost A21 E26 Base
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100A21/IF/120V/NEODYMIUM 75A21/IF/130V/5M 75 Watt Inside Frost A21 E26 Base, 75A21/IF. 75 Watt A21 Frost, 75A21 Inside Frost, 75A21,  75A21
100A21/IF/120V/NEODYMIUM - 100 Watt A21 Frost Neodymium 120 Volt, Medium Base 5,000 Hour 100A21/F/12V 100 Watt Inside Frost A21 E26 Base - 100 Watt A21 Inside Frost Medium Base 12 Volt, 1,500 Hour
BBA (250W/120V) ANSI Photoflood E26 Base 75A21/F/34V 75 Watt Inside Frost A21 E26 Base
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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 75A21/F/34V 75 Watt Inside Frost A21 E26 Base, 75A21/F/34V Satco#S5022
BBA (250W/120V) ANSI PHOTOFLOOD E26 BASE -  250 Watt 120 Volt E26 Base, 3 Hour 75A21/F/34V - 75 Watt A21 Inside Frost Medium Base 34 Volt, 1,500 Hour
150A21/CL/130V/5M 150 Watt A21 Clear E26 Base BCA (250W/120V) ANSI Blue Photoflood E26 Base
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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 BCA (250W/120V) BLUE PHOTOFLOOD E26 BASE, BCA ANSI BULB, BCA, BCA PHOTOFLOOD, EIKO #00050, BCA ANSI CODE, ANSI CODE:BCA,BULBO,BOMBILLA,LAMPOULE
150A21/CL/130V/5M 150 WATT A21 CLEAR E26 BASE - 150 Watt A21 Clear Medium Base 130 Volt,  5,000 Hour BCA (250W/120V) BLUE PHOTOFLOOD E26 BASE - BCA ANSI BULB 250 Watt 120 Volt Blue Photoflood E26 Base,  3 Hour
150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base Replacement Bulb for FMP #253-1430
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150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base, 150A21/IF/Coated/130V E26 Base, 150A21TF, 150A21 Tuff Coat, Coated 150A21 Bulb Replacement Bulb for FMP #253-1430
150A21/IF/SAFETYCOATED/130V Silicone Coated A21 E26 Base - 150 Watt Silicone Coated A21 Inside Frost, Medium Base 130 Volt Replacement Bulb for FMP #253-1430 - 150 Watt Silicone Coated A21 Inside Frost, Medium (E26) Brass Base 130 Volt
150A21/TRANS-RED PET NITE-BRITE E26 BASE 150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE
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150A21/TRANS-RED PET NITE-BRITE E26 BASE,150A21 TRANS-RED NITE_BRITE,#80660,PQL 80660, PET BULB,REPTILE BULB,REPTILE LAMP 150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE, LUNAR BRITE,#80907,PQL 80907, PET BULB,REPTILE BULBS,REPTILE LAMP
150A21/TRANS-RED PET NITE-BRITE E26 BASE - 150 Watt Transparent Red A21 NITE-BRITE Pet Bulb. Medium (E26) Base 130 Volt, 5,000 Hour 150A21/BLACKPET LUNAR-BRITE 150 WATT E26 BASE - 150 Watt Black A21 LUNAR-BRITE Pet Bulb. Medium (E26) Base 130 Volt, 5,000 Hour
   
 
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