This Marina Double Sided Aquarium Background consisting of solid black & solid royal blue adds beauty to any aquarium. The backgrounds are durable, water resistant & are easy to cut for a custom fit. 24" (61cm) Printed plasic background attach to the back of the aquarium. These backgounds are superb & when fixed using the Clearview background fix offer an excellene effect. Cut to length in-store from a roll. Priced per 10 cms. Measure aquarium & order in multiples of 10cm. Example; aquarium 80cms long, order quantity 8. Note that the height doesn't need to be exact because the gravel will cover the lowest part of the back of the aquarium. The cut section will need final trimming with scissors. This price is for 24 inch high by 10 centimetres