If the actual situation in your home is not easy to open the hole, you can choose to directly install This side-mounted on the wall in the attic, the operation is also very convenient. The main problem is this: installed after the hole is relatively small. Maximum support to the hole 1.2M height, people go into the attic may be bent, but on all sorts of things if the attic is storage, not often used, the relationship is not significant. Colors: white, dark gray, orange, sky blue, white and other colors can be white. Sizes: 700 * 900,700 * 1000,700 * 1200 S bend is rounded shape, smooth and delicate, S bend is the use of high-strength GB 2.0mm thick high-quality steel stamping. Stepping surface is planar pattern shape, with 1.5mm thick national standard quality steel stamping, 400mm wide and 100mm long-run high within each step 250mm, border and stepping are steel, the surface electrostatic spray. The total thickness of door 30mm, PVC edging. Downstairs not see screws on the door, a triangular configuration with increased dedicated hinge piece replaces the traditional hinge, equipped with self-closing devices, two hydraulic rod, two springs, the use of lighter and more stable and more safer and more beautiful. The maximum safe load of 200 kg. Different styles of stairs matching conditions (1) semi-automatic retractable attic stair entrance requirements: minimum width 600mm, maximum 800mm; minimum length 800mm, maximum 1250mm normal width 700mm * 900mm; 700mm * 1000mm; 700mm * 1200mm floor height adaptation: the ceiling to the floor The vertical distance of 3 m 5 or less can be. (2) Electric RC subsection (automatic) retractable attic stairs: electric type attic stairs more stringent requirements, hole size must be 700mm * 1000mm, 700mm * 1200mm vertical height of the ceiling to the floor of the general requirements in 2200mm-3000mm, but must be 3 meters. Its thickness requirements 130mm above the hole, you can pad thickness is insufficient, beyond finite thickness, we will provide users with the installation longer bolts; when it is best not claim against the wall around the hole and, if the case against the wall, depending on the situation specific to the user resolved.