The collector uses the whole south wall of the shack.
The collector is a very simple thermosyphon air heating collector that uses 2 layers of black insect screen as the flow through absorber, and 6 mil poly film as the glazing.
Bob took the time to insulate and seal up the ice shack before installing the collector, which is key to making it work. On a sunny day, it heats the inside of the shack up to very comfortable temperatures.
All the details from Bob...
If Bob can heat his ice shack with solar, you can surely heat your home, or chicken coop, or barn, ... with solar!
Gary