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Norman Lamps F20T4-DL 20.5 in. Daylight - Watts: 20W, Type: T4 Fluorescent Tube, Color - - Amazon.com
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GE Ecolux 20-Watt EQ T4 Cool White Light Fixture CFL Light Bulb in the CFL Bulbs department at Lowes.com
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Satco 13-watt Pin-based Compact Fluorescent Bulb - 13 W - 800 lm - T4 Size - Warm White Light Color - GX23 Base - 12000 Hour - 4400.3°F (2426.8°C) Color Temperature - 82 CRI - Energy Saver - 1 Each - Thomas Business Center Inc
![Antares OT421 Odyssey Ultra Slim T4 20 Watt 21" 120V AC Fluorescent Fixture with Blue Lamp ETL Listed - - Amazon.com Antares OT421 Odyssey Ultra Slim T4 20 Watt 21" 120V AC Fluorescent Fixture with Blue Lamp ETL Listed - - Amazon.com](https://m.media-amazon.com/images/I/51jRWWgOFYL._AC_UF1000,1000_QL80_.jpg)
Antares OT421 Odyssey Ultra Slim T4 20 Watt 21" 120V AC Fluorescent Fixture with Blue Lamp ETL Listed - - Amazon.com
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20W T4 4100K Linear Fluorescent tube watt 4100k linear fluorescent tube f20t4/cw f20t4 watt watt 4100k linear fluorescent tube f20t4/cw **not available** f20t4 watt watt 4100k linear fluorescent tube f20t4/cw **not available**
Sylvania 4ft T5 LED Tube Lights 3500 Lumens 25 Watt 4000KCool White Replaces 54 Watt Fluorescent Tubes Case of 25 - Office Depot
![Bulbrite F20T4 41K 20-Watt Linear Fluorescent T4 Bulb, 4100-Kelvin, Mini Bi-Pin Base, 20.5-Inch - Compact Fluorescent Bulbs - Amazon.com Bulbrite F20T4 41K 20-Watt Linear Fluorescent T4 Bulb, 4100-Kelvin, Mini Bi-Pin Base, 20.5-Inch - Compact Fluorescent Bulbs - Amazon.com](https://m.media-amazon.com/images/I/51Tj1j2VdLL.jpg)
Bulbrite F20T4 41K 20-Watt Linear Fluorescent T4 Bulb, 4100-Kelvin, Mini Bi-Pin Base, 20.5-Inch - Compact Fluorescent Bulbs - Amazon.com
![Utilitech 65-Watt 8-in Miniature Bi-pin (T4) 6500 K Daylight Circline Fluorescent Light Bulb in the Fluorescent Light Bulbs department at Lowes.com Utilitech 65-Watt 8-in Miniature Bi-pin (T4) 6500 K Daylight Circline Fluorescent Light Bulb in the Fluorescent Light Bulbs department at Lowes.com](https://mobileimages.lowes.com/productimages/f6c4c611-22bd-44f4-a7c7-5d68cf0aabdb/00739652.jpg)