These boards are brand spanking new - never even removed from the plastic. They were purchased directly from Horticulture Lighting Group in the US. I've kept them as spares for my grow light however, I've never need them. 1 box will contain 2 Quantum boards. If you would like all 4, please make your quantity 2. QB 288 V2 boards are made USA by Horticulture Lighting Group. Each board has 288 Full Spectrum Samsung LM301 LED. Specifications: 288pcs Mid power Samsung whites Dimensions 6.833" x 11.25 Max current per board 3000mA @ 54VDC Requires an Aluminum plate or heatsink if running 55+ watts or over 1050mA
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