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The Series 550 Rafter Support Kits are engineered to provide your GrowSpan Series 550 High Tunnel Greenhouse with dependable structural reinforcement
Commercial-grade components
Heavy-Duty Extruded Aluminum Frame
no matter the season
Customizable Comfort: Adjust the opening temperature to suit your specific plant needs
GrowSpan Summit Educational Greenhouse Shutters The Series 550 Rafter SupportGrowSpan Summit Educational Greenhouse: Cultivate Curiosity All inclusive pricing shipping is covered to save you money and simplify your purchase. Designed for Learning: The 14'W GrowSpan Educational Summit Greenhouses are available in a variety of lengths, making them perfect for research, education, and hands on learning experiences. Why it matters: Ideal for colleges, universities, schools of all levels, zoos, research institutions, or even for
