Thank you for visiting our site. The main body and inner box are not fixed together because there are no screws to fix the main body and inner box. Please refrain from using this product if you are concerned about the hairs on it because there is a cat in the house. Please check the details in the pictures. We appreciate your understanding in this matter. International Buyers – Please Note. We are located in Fukuoka Japan. It’s our pleasure to make you happy by proposing our recommend item. If you have any questions or request about items, please feel free to ask us. We Do Not Mark Merchandise Values Below Value Or Mark Items As “Gifts” – US And International Government egulations prohibit such behavior.