3-Step Easy Installation: Cut an opening according to the dimensions of 63'x22.5', choose between two installation heights of 290-360 cm (9.5-11.8 ft) or 360-365cm (11.8-12 ft) to suit your preference. During installation, drill holes at the corresponding positions, suspend the attic ladder, and secure it in place with screws. Hydraulic Cushioned Descent: Equipped with a special hydraulic rod to prevent sudden drops and accidents, ensuring a slow and controlled descent for the safety of your family. When closed, it fits snugly to the attic, leaving no gaps for a perfect, concealed appearance. Easy Closure: Includes a pull rod and pull ring for effortless opening and closing of the attic ladder, without the need for shims. The insulated door panel provides thermal insulation and can fold away invisibly, seamlessly blending with various home decor styles