Fluker Labs - Metal Screen Cover 20L/29 GallonFluker Farms metal screen cover creates a more secure and stable environment for any pet. Made of a durable metal, this unique cover withstands high temperatures from heating devices. The metal mesh screen also increases the tank air circulation, minimizing unwanted growth of mold, bacteria and other organisms in your tank. 12 in x 30 in - UPC: 91197380037