Not exactly
But thanks. Been reading up on all kinds.
I don't mind ugly.
My apartment had a variety of windows and a sliding glass door.
It's got some serious drafting, but I like the fresh air most of the time.
I'd hate to seal it of permanently.
So I'm going to construct a variety of 1/2 inch PVC frames. Wrapped in plastic, they become the perfect insulation frames. Slap them in as needed, either inside the window area (side sealed) or simply velcroed to the interior wall, blocking the full window.
I can wrap them in fabric for light block and looks as needed and use them to block out the light for TV watching as well, swapping them for clear ones in the daylight.
PVC goes at $2.50 per 10', joiners and corners are 0.25 apiece. I can do this for about $5 per window.