Enhance the beauty of your pet's aquatic environment with this double-sided background. Made from durable, water-resistant material, the background is suitable for use in freshwater and marine aquariums. Add some background color to your pet's aquatic environment with the Marina Reversible Precut Aquarium Background. Featuring a reversible, double-sided design, the versatile background spices up your pet's environment. The background is made from durable, water-resistant material to ensure long-lasting use in a freshwater or marine aquarium. Adds beauty to almost any aquarium Suitable for use in fresh and marine aquariums Crafted from durable, water-resistant material for long-lasting use Reversible, double-sided design allows for versatile application and adds rich color to your pet's environment Available in 12" x 24" (for aquariums up to 15 gal.), 18" x 36" (for aquariums up to 45 gal.) and 24" x 48" (for aquariums from 45 to 120 gal.) *See menu selections above for sizes in stock and available online.