Check out this tunneled greenhouse from outsunny, and create a solid and warm home for your little green friends. Our plant nursery is constructed of a strong and solid steel pipe frame with a durable pvc plastic cover over the top. The lightweight design of the plant greenhouse means it's quite easy to move when needed while still proving stability with its metal steel frame. Finally, the double zippered roll-up side doors give plenty of great access while controlling ventilation when needed.