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Focus Lighting - 13W Compact Fluorescent Bi-pin Tube (2-PK).    NEW!!!

13watt Compact Flourescent Bi-Pin Tube sold in packages of 2

Greenlite 13 Watt Twin 4 Pin PL (12-pack)

The Greenlite Fluorescent Twin 4 Pin is a perfect alternative to high wattage bulb, and it only uses 13W. Energy Star qualified product. Sold in pack of 12 @ $4.90 each.

Compact Fluorescent T4 - Twin Tube: Energy Wiser/Major Brand-504023

13W light bulb with average 10000 hour lamp life.

Focus Landscape Lighting - 13W Warm White Tube Lights.

The most common and least expensive lights that gardeners can use to grow plants. They are more efficient than common incandescent lights for plant growth, giving more light per watt of electricity with less heat.

Compact Fluorescent T4 - Twin Tube: Energy Wiser/Major Brand-504033

13W light bulb with average 10000 hour lamp life.

Compact Fluorescent T4 - Twin Tube: Energy Wiser/Major Brand-504043

13W light bulb with average 10000 hour lamp life.

Compact Fluorescent T4 - Quad 2-Pin: Energy Wiser/Major Brand-504113

13W light bulb with average 10000 hour lamp life.

Compact Fluorescent T4 - Quad 2-Pin: Energy Wiser/Major Brand-504213

13W light bulb with average 10000 hour lamp life.