This is our most economical wood-sided building. 5/8 T-1-11 siding that covers this frame makes this building as structurally sound as any shed on the market. The siding is natural, however we spray a clear protective sealer on the siding unless you specify to leave the sealer off due to the fact you will be painting the shed in the near future. This unit is standard with a wood door, windows and electrial outlets, depending on the size of unit ordered. This unit is also available with a metal door as a standard feature and a shingle roof is available on request.