package include 60 channel (6.5ft each) +60 spring wire. (6.5ft each). +60Connectors, (4 in" each)This is the second generation of aluminum greenhouse lock channel made by SHANS. It is precisely manufactured by a experienced factory and the subsequent cutting is performed by a precision saw, so you can see that the cross section of the product is very smooth without any deformation. Our second generation products have undergone many upgrades. The thickness of the aluminum channel is increased to make it stronger and it does not break when bended. The internal space of the aluminum channel is optimized, and the right-angle protrusion is removed to make the internal space more complete, which makes the installation and removal of the spring wire more convenient. The reasonable inclination angle makes the spring wire more firmly held. The oxidized outer layer is strengthened so SHANS products have a longer service life in bad weather. Accurate air-cooling quenching technology improves the hardness of the outer layer of the aluminum channel, thereby improving the resistance of the aluminum channel to strong wind and makes your greenhouse safer. SHANS designs and holds product shape patents.