Easy to install. Dogs and cats can easily come and go on their own. Closes automatically using rubber. ・Saves on air conditioning costs. ・No hassle when going to bed. ・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 depending on your PC environment and lighting. ・Please note that there may be slight measurement errors due to amateur measurements. ・We carefully inspect our products, but as they are produced overseas, the sewing may be less refined compared to Japanese products. We appreciate your understanding.