The “Grüne Bogen” by Poppen Gewächshausbau has a frame made from stable aluminium profiles that are partially pre-assembled, but can easily and quickly be packed together. The roof and walls are made from a combination of hollow chamber profiles and greenhouse film. This combination has been used in professional greenhouses for decades. No foundation is required. The greenhouse is erected and fixed in place using anchors. Why use film as roofing? The technical properties of greenhouse films promote and encourage plant growth. The main characteristics are diffusion (light scattering) and that the UV rays are not reflected but reach the plants (UV open).