Who says RVs don't come with their own fireplace?  Your class C rig has one right in the cab.  Yep, when you get into camp and turn off the engine, where does all that heat go?  Right into the cab through the engine cowling.  You know, that thing that has been causing those burns along the outside of your right leg.  On a hot summer day you want to let all that heat out so you roll the windows down.  Unfortunately you also let all the bugs in.  This is where Skreenz come in.  One of the most innovative products we've come across these simple slip-on screens let the heat out and keep the bugs from coming in.  They slip on just like a pillowcase over the door frame.  Super simple.  Also you can roll up and down your window without removing them.