Shelter Size: 40FT × 40FT × 14.5FT. Suitable for Gravel, Dirt, Concrete, or Asphalt Surfaces. 40x20x6.5FT Single Truss PVC Container Shelter Canopy. ✔ Agricultural Feed & Hay Storage. Create instant covered storage space quickly, economically, and reliably with this heavy-duty container-mounted shelter system.