This Gold Mountain Single Truss Arch Storage Shelter W40’xL80’xH20′ is a good option for outdoor agricultural and industrial storage. You can use it for warehouse, workshop, storage for grain, sand, coal, and raw material, equipment, livestock, and others. This canopy storage shelter is in the width of 40 ft, length of 80 ft, and height of 20 ft. It’s necessary to tighten the roof fabric enough to avoid ”hammocks” on the roof and also re-tighten once or twice again after a few months of use. This is important when assembly in cold weather autumn and winter because the fabric is stiff then and when we got the sun and warm weather afterward it will make the fabric ”slack” again and need to be re-tighten before next winter.