Petsfit Safe Hideout for Small Animals,Hamster Wooden House,Hamster Gerbil Mice Home Ideal hide-out for hamster, mouse and small hedgehog Inner dimension:6-1/4-inch length by 6-1/4-inch width by 7-1/2-inch height;door dimension 3-1-8 inch diameter. All natural ceder wood without paint. Easy to set up,no tools,no screws needed. Please check the dimension and measure your pet.