Supa 24" Condensation Tray provides a physical barrier between the aquarium water and the electrical fittings. Electricity wires can be kept together. Fish can be fed without removing the cover. Actual dimensions of what is referred to as a 24" x 12" Condensation Tray is 59cm x 30cm. Can be easily cut to fit your aquarium, if required. High quality plastic condensation trays are particularly ideal for tropical fish tanks that produce condensation. Made in the UK at their Sheffield factory for over 30 years.