18W E27 Grow Light for Greenhouse, 13 x 8.5 cm, Easy to Install, Waterproof, 440 mol/m/s. Description: Size Information: The E27 LED grow light (diameter x height) measures approximately 13 cm x 8.5 cm / 5.12 inches x 3.35 inches. High Efficiency Performance: With a high PPFD plant light output of 440 mol/m/s and an efficacy of 2.2 mol/J, this 18W lamp provides energy-efficient supplemental lighting for greenhouse applications. Universal E27 Installation: With a standard E27 LED grow light base, this bulb easily screws into common sockets for convenient installation in grow tents, greenhouses, or indoor gardens. Robust Construction Quality: Constructed from thickened aluminum and PC materials, this waterproof horticulture lamp is resistant to water, dust, and outdoor conditions. Versatile Application: Suitable for various plants, including strawberries and dragon fruit, this 18W supplemental greenhouse lighting solution promotes flowering, fruit production, and overall growth efficiency. Package Includes: 1 x E27 LED Grow Light. Note: Please allow for slight errors of 1-2 cm/0.39-0.79 inches due to manual measurement. Seller Warranty: 0 days