We used a white tarp type canopy 'garage' with a steel frame for outdoor storage. It was not tall enough for an AS.
The frame needs to be securely fastened down and the sides and top tied down well. Wind lifted ours and bent it a lot. It was salvageable but just barely.
In Southern California sun the fabric essentially fell apart in three years. If served the purpose but I won't waste the money on one again
Sent from my pocket Internet using Airstream Forums
'The Silver HamShack' (2007 International 22FB CCD 75th Aniversary model)
Multiple Yaesu Radios inside and many antennae sprouting from roof, ProPride hitch
2012 shortbed crewcab 4x4 Toyota Taco TV with more antennae on it