Fluorescent Bulbs > ALL PRODUCTS
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Eiko dt18-35-rs 18w T5 Duo-Tube CFL
$5.75 -
Eiko dt24-30-rs 24w T5 Duo-Tube CFL
$5.99 -
Eiko dt36-35-rs 36w T5 Duo-Tube CFL
$12.99 -
Satco s8159 40w T5 Circline High Performance Lamp 3500K
$20.99 -
Satco s8156 22w T5 Circline High Performance Lamp 3500K
$18.99 -
Satco s8166 22w T5 Circline High Performance Lamp 6500K
$32.99 -
Satco s2956 22w T5 Circline High Performance Fluorescent Lamps 3500K
$74.99 -
Satco s8160 40w T5 Circline High Performance Lamp 4100K
$20.99 -
Satco s8164 40w T5 Circline High Performance Lamp 2700K
$32.99 -
Satco s7379 65w T5 Spiral CFL 6500K
$24.99 -
Satco s8665 36w T5 Twin tube CFL 4100K
$11.99 -
Satco s7399 85w T5 Spiral CFL 5000K
$48.99 -
Satco s8145-tf 54w T5 Shatter Proof Fluorescent 4100K
$33.99 -
Satco s6760 24w T5 Single-tube CFL 3000K
$25.99 -
Satco s7375 105w T5 Spiral CFL 2700K
$52.99
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Benefit from the energy-saving and long-lasting properties of fluorescent lighting. This popular technology generates light by running an electric current through a tube filled with mercury-vapor gas. Some fixtures come with added protection by means of tube guards for fluorescent lights that can slide over the linear tube light to protect it or even to change the color of the light. Fluorescent bulbs come in different shapes, most commonly linear fluorescent lamps, circular fluorescent lamps or compact fluorescent lamps. Some popular models include T4 twin tubes, T12 or T8 bulbs, commonly used in commercial applications. T8 light bulbs also come as U-bend or shatter-proof fluorescent tubes for added versatility of applications. Explore our different categories and selection of fluorescent light bulbs 4 inches to save money and energy while providing the ideal illumination for your project.