Whether you use it for family activities, workshop, or pets, this enclosure has interlocking vents and full length handles that slide smoothly to one side to allow full access to your garage. Screened vents keep out insects, admit plenty of light and provide energy-saving cross ventilation. Choose from a top hanging or bottom rolling installation. This is a 4-Track, 4-Vent system. Simply slide one vent and the rest will follow. Security locks installed in factory. Standard built-in one piece threshold.