I didn’t want real wood either since it’s a pain to maintain. Trex is a composite. While it looks wood’ish, there’s not mistaking it for wood. So I went with a nice grey color. It still looks great though.
I’d give Monti a call for details. I didn’t know too much about the product until he told me about it then I started researching it. I just wanted a composite with glass panels and that’s what he recommended.