About material: The bird breeding box is made of wooden materials, will not harm the health of the bird, perfect spot for your parakeet to rest and nest. About size: 5.9 x 5.12 x 6.57 inch (L x W x H), Hole diameter: 2.17 inches, suitable for small and medium-sized parrots and birds such as budgies. Innovative design: Side opening for easy cleaning and removal of bedding materials. Bolt lock stable shape beautiful arc design is not easy to fall off. Designed for budgie, parakeet, lovebirds, parrots etc. Interesting design: The rubber band door is designed for easy cleaning, and one side of the top can be lifted to facilitate putting wood chips and cleaning. We guaraParakeet Nest Boxntee: If you are not satisfied with our products and services, please feel free to contact us at first, we promise 24 hours customer support.