Add To Saved Sellers. Ask us a question. Camptech Starline Air 300 Inflatable Caravan Porch Awning – Exchanged. Camptech Starline 300 inflatable Porch Awning. About this exchanged awning. Exchanged after changed their minds. Small repair to roof panel, waterproof and sealed. Comes with 6 month guarantee – this awning has been fully erected and inspected …