The Zilla Fresh Air Screen Cover provides security safety and peace of mind when housing animals in aquariums. Fresh Air screens allow a healthy exchange of air to keep your cold-blooded reptile active and healthy. The metal mesh and steel frame are built to resist scratching biting and the intense temperatures of heat lamps. Tough escape-proof mesh resists scratches bites and corrosion Mesh and steel frame withstand high heat of reptile bulbs for years of daily use Promotes healthy exchange of fresh air for cold-blooded reptiles The tough escape-proof galvanized steel mesh resists corrosion and the scratching and biting of even the largest pets. The metal mesh and black steel frame withstand the high heat from reptile bulbs and retain their shape after years of daily use. Pre-drilled holes allow for quick attachment of Zilla Locking Screen Clips combination locks and power cords (sold separately). Note: Measure the length and width of the top of your terrarium before ordering to ensure a correct fit!