This sofa bed mattress lift is a great addition to any home, providing a comfortable and convenient option for guests to sleep. The mechanical hardware and hinge case make it easy to use and store, while the spring type ensures a sturdy and supportive sleeping surface. The brand of this sofa bed mattress lift is Case and it is designed to fit any standard sofa bed. The cabinet hardware and hinges make it easy to instal and use, while the spring type ensures a comfortable and supportive sleeping surface. This product is perfect for anyone who wants to provide a comfortable and convenient option for guests to sleep without compromising on space.