OPTIMAL ENERGY PRESERVATION: New system with 3 shutters protecting your home from hot or cold climates and adjustable flexible shutters with a magnetic seal for increased protection REINFORCED INSULATION: Insulated center louver keeps hot or cold air out of your home RUGGED STRENGTH: The sturdy metal frame features aluminum reinforced corners and is designed to withstand the many comings and goings PET ACCESS CONTROL: Thanks to the sliding closing panel, control your pet’s access to the outside and prevent its friends from entering your home