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Extruded aluminum "U" channel used to finish bottom edge of twinwall polycarbonate panels - 6' or 8' section with drainage holes. Additional Information Installation Installing Polycarbonate Panels (PDF)
Fits perfect for 10 mm poly. Glad someone is making a product of quality and that will last.
aluminum U end cap
It worked very well for the walls. We used it for top, bottom and sides of the greenhouse.
Aluminum Framing Material
I'm a novice gardener and wanted to build a grenhouse. I built my frame out of wood and used this aluminum framing and the polycarbonate panels to form the outer shell of the greenhouse. It was light weight and easy to use. I have to say the greenhouse looks like a professional kit.