This greenhouse has translucent polycarbonate panels, so you can check on the status of your plants from time to time. To ensure the internal environment is in optimal condition, the greenhouse has 2 window openings. It also has a base to ensure that water does not collect under the house and allows for better ventilation. It uses high-quality aluminum to manufacture the frame, which is rust-proof and corrosion-resistant. H&O Direct 8x6 ft Aluminium Garden Greenhouse with Base & Window in Clear