Mini Spider Enclosure, 3x3x6’’ Acrylic Terrarium with Ventilation Jumping Spider Enclosure Cage Portable Micro Habitat Terrarium for Tarantula Lizards Gecko with Tongs, Dropper. MAGNETIC DOOR DESIGN: The front and top of the spider cage with ventilation are both designed with magnetic suction doors, which can tightly fix it on the surface of the acrylic spider box.