Easy to install. Dogs and cats can easily enter and exit on their own. Closes automatically using rubber. - Saves on air conditioning costs. - No hassle when sleeping. - Easy to install in rental properties. *The outer box will be removed before shipping. ○ Immediate purchase welcome ○ Brand new, unused ○ Free shipping ----- ● Notes - Colors and materials may appear slightly different from the photos due to PC environment and lighting conditions. - Please note that there may be slight measurement errors due to amateur measurements. - We carefully inspect our products, but due to overseas production, the sewing may be less refined compared to Japanese products. We appreciate your understanding.