This greenhouse kit utilizes lightweight, yet sturdy. The combination of pe cover and steel frame is an incredibly durable final product that can fit the sunroom in any tight spaces. The 3 zipper doors of the backyard greenhouse allows for easy access and ventilation while it also can be sealed in to maintain the internal climate. Perfect if you want to reduce excessive heat or cold and keep your seedlings safe throughout the seasons. Start your backyard gardening with our patio greenhouse.