It looks like you are using an ad blocker. That's okay. Who doesn't? But without advertising revenue, we can't keep making this site awesome. Click the link below for instructions on disabling adblock.
Plastic? sheet metal? For the top part. I'm making the frame from wood, 2 ft. wide, 2 ft. tall, 8-10 ft. long flat box for summer and winter set ups in my yard.