I purchased this last month as an oxygen chamber, but my cat hardly ever went inside, so it's been sitting in the room. To use it as an oxygen chamber, you will need to rent or prepare an oxygen concentrator separately. All accessories are included. The round clear cover on the ceiling has been removed and stored like the mesh cover. Also, the condition is good, but there is a small stain on the bottom (see image 3). It will be shipped in the original cardboard box. Please understand that this is a used item before purchasing. I will ship it as soon as possible. I do not respond to price negotiations. Unicom Pet Oxygen Chamber Cage Pet Oxi Hotel Square S Size 【Size】 Outer dimensions: Width 50 x Depth 60 x Height 50cm 【Suitable for】 Dogs, cats, rabbits, ferrets, hamsters, and parakeets For small to medium-sized animals (Chihuahuas, Yorkshire Terriers, Pomeranians, Miniature Dachshunds, Toy Poodles, etc.) You can put the cage inside, so it can also be used for small animals.