The Secret Jardin Dark Dryer DD90 lets fresh air flow through without letting the light out! Its washable so you can keep your unit scent-free. This dryer is equipped with a built-in extraction sock at the right rear corner of the roof to easily install an exhaust fan to remove moisture. A convenient cable sock behind it handles the wiring. The surrounding fabric on this Dark Dryer has 80% reflective material on the interior side with panels of breathable material inset at the bottom of each side for unrestricted airflow in an upwards direction. Just like the Dark Rooms, the dryer also has strong frame tubing which can handle up to 44 pounds of equipment. Simple assembly is required. No tools needed.