Alfie Pet by Petoga Couture - Adam Living Habitat for Mouse, Chinchilla, Rat, Gerbil and Dwarf Hamster - Size: Large Measures 6.25" in height, 7.5" width and 16.25" in length. Convenient for ventilation and easy to observe the behavior of animals. Perfectly sized and heavy enough to stay put. Made with pet safe materials that is easy to clean and resistant to odors. Assembly is required