carport canopy: 1. material is aluminium alloy. 2.Best quality,it can use more than 30 years. 3.It's very easy to install. canopy 1) made of aluminum alloy 2) Best quality ,and it can use 30 years 3) it is easy to install The big steel canopy are made of aluminum alloy ,and the pc cover will protect your car from UV. We can do any size and color for you .Single carport size: 5400*2700/3000*2200/ ...