This EAGLE PEAK walk-in tunnel greenhouse is an ideal way to extend your growing season while easily managing your plants and protecting them from extreme temperatures. The direct and diffuse light transmission of the polyethylene film cover is about 90%. As with most polyethylene films, due to its translucent nature, most of the transmitted radiation is diffused away, which is very beneficial to the plants in the greenhouse. The zippered door allows easy access to the growing space with plenty of swing space to put in gardening tools, seeds, soil and pots. 2 roll-up windows are covered with mesh to cross ventilate and control temperatures while keeping threats out. The sturdy steel frame can be securely installed with the included ropes and stakes.