This Hamilton Cair-O-Port Protective Storage System has an external lightweight steel frame, modern state of the art materials and the benefit of three electric fans. This combination makes the Cair-O-Port the most efficient indoor storage system available.The external frame has the advantage of being strong, simple and quick to erect, the modern materials are lightweight but strong and are easily attached to the frame. The three filtered fans ensure that every crevice even under the car are kept dry and free of condensation. This combination provides cost effective protection for sports & classic cars, motorbikes, or general household dry storage.Having the external frame makes access to the Cair-O-Port very quick and easy, two vertical zips and a Velcro flap are all that is required to encapsulate or release your treasured possession. The Cair-O-Port then remains in place ready for your return. The filters can be easily removed for cleaning. Access at any time for minor maintenance i