The GrowLab GL40 706820 indoor grow tent has all the features you could ask for and more! This small tent is great for the starting grower. Just under 4 feet tall, it will give you plenty of space for seedlings and cuttings while saving overall space in your grow area. Outfit the GrowLab with the ventilation fan, lighting system and growing system of your choice and you will have the brightest, slickest, most affordable grow room available. This grow tent utilizes intake/exhaust ports that allow adjusting to fit various sizes of ducting. The silver Mylar film used in the interior is highly reflective, waterproof, and extremely insulative (offering 97% thermal protection). This film is also non-toxic and will not release any harmful gasses that can damage sensitive plants.