Metal storage structure for 20 foot long travel trailer?

Bought mine from https://alansfactoryoutlet.com

Mine is just a carport, no walls or door, just the frame and roof. Since I bought mine, two neighbors have come and inspected it and bought their own. One bought it with 3 walls for storing his jet skis. Another bought it with 3 walls and a roll up door for storing a tractor.

Mine has survived high winds and heavy snow without problem.