Need a large multi-level cage

Chinchillas are incredibly agile and need space to jump. The standard small animal cages sold in pet shops are completely inadequate. I built a custom multi-level cage (180cm tall, 90cm wide) with wooden shelves and ropes, and the difference in my chinchilla's behaviour was immediate — constant jumping, exploring, and playing. Please invest in proper housing; a confined chinchilla is an unhappy one.