Pet door! Brand new, unused. Taken out of the box for photos. The transparent door has protective vinyl attached. Please peel it off before use. Size: M Please refer to the photos with the measuring tape for the size. ---------------------- We do not provide instructions or support for installation. Please purchase only if you are familiar with the product and can research the installation method yourself. * We cannot answer questions regarding installation methods. ---------------------- Regarding the condition, individual perceptions may vary, so if you are concerned about minor details, we kindly ask that you refrain from purchasing. Instant purchase OK!