The Adco SFS AquaShed Cover for Travel Trailer - Up to 37' Long - Gray # 290-52247 you ordered will be a great fit for your 2008 Dutchmen Tundra M-30QB-DSL travel trailer. The specs I'm seeing for your trailer show it being 35'-8" in length and this cover was designed for trailers 34'-37' in length. This cover is rated best for use in cooler northern climates, as you can see in the attached RV Climate Map.
If you wanted a cover that would be rated for use in all climates then I recommend... view full answer...