[JRTJH]

We bought a roll of solar block fiberglass window screen at Home Depot, used "self stick Velcro" on the window frames and hang the window screen on the outside of the trailer during setup. You'd be amazed at the amount of heat gain that comes in through those "big tinted windows". With the solar screen on the outside (just six 3" strips of Velcro on each window) we found our trailer that was literally intolerable in 110F to be comfortably cool. Of course we also sealed all the ducts and vents to eliminate air leaks into the roof/ceiling and resealed the air return/cold air chamber inside the air conditioner, but found those mods weren't enough to fix the problem. The solar screen is a tremendous help.