H2Pro 20" Glass Canopy for 10 Gallon Aquarium Fish Tank (19.33"x8.86") Fits Most 10 Gallon Fish Tanks. There are different aquarium manufactures. PLEASE MEASURE your tank opening to the closest millimeter before purchasing! Dimensions: 19.33 x 8.86 x 0.16in (491 x 225 x 4mm) Features new and improved tempered glass; durable and reduces evaporation Clear plastic back strip that can be cut to fit your aquarium Provides the area for your lighting to sit while allowing simple access to your aquarium