... , top and bottom rail l2. Door: A. structure of the double doors is a 0.9mm wear polyester fiber cord, the interior ... plates (or sandwich insulation board), the surface polyester coating, the doors of high-strength steel structure inside, a small door on ... : gray white RAL9003 (sliding door and the folding), blue (soft doors) Security: Motor thermal protection, over current, load protection Anti-rope ...