Customization Options Can I add my own vents, fans, heaters, and lights? Of course! The polycarbonate is very easy to work with, and the galvanized steel frame is strong enough to support any additional accessories. Can I get a longer greenhouse? Most of our residential and commercial greenhouses are extendable up to 100ft. Learn more about our extension kits for both the Sungrow and Sigma models. Share Share Link Close share Copy link Back to FAQs
