It's an 8x8 frame. It was for a green house, or maybe a tent, like what vendors have at outdoor shows. It's the "addition" to the run; the original part is 10x10. That has a solid roof, made of polycarbonate panels. Like what they use for green houses, but 83% light transmission. It still gets HOT under there! I'll be using something as a shade cloth in a couple months.