Description: 【Size Information】E27 LED Plant Growth Light (diameter x height) measures approx 13cmx8.5cm/5.12inchx3.35inch 【High Efficiency Performance】: With a high PPFD plant light output of 440μmol/m²/s and efficacy of 2.2μmol/J, this 18W lamp provides energy efficient supplemental lighting for greenhouse applications 【Universal E27 Installation】: Featuring a standard E27 LED plant growth light base, this bulb easily screws into common sockets for convenient setup in grow tents, greenhouses, or indoor gardens 【Robust Build Quality】: Constructed with thickened aluminum and PC materials, this waterproof horticulture lamp for resistance against water, dust, and outdoor conditions 【Versatile Application】: Suitable for various plants including strawberries and dragon fruit, this 18W greenhouse supplemental lighting solution promotes blooming, fruit production, and overall growth efficiency Package Includes: 1 E27 LED Plant Growth Light Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.