<p><b>Double-bubble inner lining: Provide heat-reflective insulation material with a thickness of 6mm to reflect heat from both sides (winter or summer).</b></p> <p></p> <p><b>Use our stair insulation cover to prevent heat from flowing through the attic opening, thereby delaying the conduction heat movement.</b></p> <p></p> <p><b>After the insulating material is installed correctly, hot or cold wind at the attic opening will stop immediately.</b></p> <p><b>Install our attic staircase insulation layer to give you an effective heat management solution and let you experience a better quality of life.</b></p>