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Aluminum Alloy Locking Channel The locking channel is made of aluminum alloy against rust and corrosion which is sturdy and sturdy and can be adapted to different needs. Length 2 m width 3.2 cm height 1.2 cm thickness 1.5 mm. PE Coated Spring Wire:The spring wire adopts premium iron core wrapped by PE shell. The PE material is chemically stable electrical insulation cold resistant radiation resistant and has a long service life. Easy Installation You need to fix the channel with screws then cover the plastic film on it and finally stir the spring wire into the channel. The product comes with professional screws to simplify your installation. Tight Fitting Our locking channel and spring wire are made of one piece and perfectly match each other to hold your plastic firmly in place resistant to any storms and keep the inside of your greenhouse warm and comfortable. Versatile Uses The locking channel and corrugated wire are suitable for many types of greenhouses and can be used to fix plastic film or shade cloth etc.You can use them to build greenhouses to grow flowers vegetables breeding keep warm in winter.