I made a cover for mine that I install over the Heki when we are not using the TC. I used 1.5" Polyisocyanurate foam board with a reflective coating. The box is about three inches tall. I attach it to the Heki with twine and bungy cords. I got tired of changing out the latches. We have had this TC for three years and have replaced the latches twice. The cover has been up there since last fall and it made it through our last Chicago winter with minor damage (some kind of animal tried to dig through it and gave up). I will go out later and get a photo or two and repost.