Large Size 36"L x 18.25"W x 16.75"H Glass Terrarium Aquarium Fish Tank with Wire Screen Top

The tank is raised up on bed risers for taking the photos. Bed risers are not included with tank. I've taken photos of the measurements so you can estimate gallon size. I do not know the gallon size. It has lived outside for a few years. I used it as a vegetable garden cloche / cold frame to protect plants. I filled the tank with several gallons of water so it would rise up a few inches from the bottom and left the water in for a week on cardboard. No leaks detected from the bottom. Comes with its sliding wire mesh top to keep your pet, reptiles, snakes, etc inside. Photos on grass are with the wire mesh cover off. Photos on the porch show the lid installed both fully closed and partially open.