I have an insulated hunting hut for sale in Smolan.  It is insulated with 1" styraphome in the walls and ceiling and 2" in the floor.  It is built on 2 4x4 treated skids so the hut itself doesn't touch he ground.  It has windows on 3 sides that measure 36" x 12".  The door is 5' tall and 24" wide for easy access in and out.  It has carpet on the floor to help with sound.  It comes with a metal roof and painted a dark green for camouflage.  Stop by Smolan and check it out or reply to this add.  Thanks for looking.