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Osram QTi DALI 2x21-39 Dimmable High Frequency T5 Electronic Ballast - Runs 2x 21-39W T5 Fluorescent Tubes - - Amazon.com
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Osram Sylvania 20924 Sylvania Pentron Ecologic Linear Fluorescent Lamp, T5, 21W, 4100K, 85 CRI, Mini Bipin, 36", Plastic, 3.425" x 23.386" x 7.638" (Pack of 40) - Walmart.com
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