I got the factory one. Works well. The material is a little thin but I only use it once it once or twice a year. Posting from my phone so I hope this picture works.
I just bought the GM tent and used it this weekend. I really liked it but the one thing that was a little bit of a pain in the as* was getting the tent to attach securely at the sail and cab. I'm thinking taking an ice scrapper and rounding off the sharp edges of the scraper and using that to help get the cord between the sail and cab? Any suggestions on this Also I bought a Coleman full size air mattress and if fits perfect. I saw that they make a special one that fits a Avalanche bed but it's $115. The Coleman full size was $40 save your money and get the Coleman