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Amazon.com: Vegelumax MH 400W Metal Halide HID Grow Light Bulb Lamp with High PAR Enhanced Blue and Violet Spectrum for Indoor Horticulture Vegetative Plant Growth,CCT 6000K,36,000Lumens,E39 Base,1Pack : Everything Else
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Feit Electric 400-Watt ED28 Shape Clear Metal Halide High Intensity Discharge E39 Mogul Base HID Light Bulb (1-Bulb) MH400/U/ED28/HDRP - The Home Depot
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Sylvania 400W BT37 Metal Halide HID Light Bulb, EX39 Base, 40,000 Lumens, 3600K, Clear - 1 Pack (64705) - High Intensity Discharge Bulbs - Amazon.com
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GE 400-Watt EQ ED37 Cool White Mogul Base (e-39) Metal Halide Light Bulb in the Specialty Light Bulbs department at Lowes.com
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