Aluminum Alloy Lock Channel: The lock channel is made of aluminum alloy against rust and corrosion, which is sturdy and tough and can be adapted to different needs. Length: 6.5FT/2M, Width: 1.25'/3.2CM, Height: 0.5'/1.3CM, Thickness: 1/16'/1.5MM. Pe Coated Spring Wire: The spring wire adopts a superior iron core wrapped with a PE cover. PE material is chemically stable, electrically insulating, 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 wiggle the spring wire into the channel. The product comes with professional screws to simplify your installation. Tight Fixation: Our lock channel and spring wire are made in one piece and match each other perfectly to hold your plastic tightly in place, resisting all storms and keeping the inside of your greenhouse warm and cozy