The main parameters of the film:
uniform diffuse distribution;
For fixing the film there are galvanized and/or aluminum profiles with PVC clips and locks, which provide the impermeability of the film coating. This system allows you to quickly install, repair and replace the film coating.
A lso some tunnels and greenhouses use plastic clips.
Steel gutters (trays) are designed to place the substrate mats at a certain height, as well as to collect and drain drainage.