The Tough-Top Screen Cover are now available with an easy-open, latching lid for quicker feeding and maintenance! Each screen cover features galvanized steel medium (1/8") mesh surrounded by black enameled, steel rims. Mesh and rim are scratch- and corrosion resistant and are designed to withstand the high temperatures from heating devices. Tough-Top Screen Covers with door come in sizes to fit 10 gallon, 15" high 20 gallon, 20" long 29 gallon, 30 gallon and 55 gallon aquariums.